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Dust, smoke and North America’s sunsets  

Many in North America are seeing layered sunsets, caused by smoke. EarthSky community photos from various places on the continent, plus a heads up … watch for blue-colored moons or suns!

what do you think?

2018-08-16 05:55:23



Carbon monoxide from California wildfires drifts east  

What happens in California doesn't stay in California. This animation, made from satellite data, shows carbon monoxide from the state's massive wildfires drifting eastward all the way across the U.S.

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2018-08-16 01:32:17



See it! Moon sweeps past Venus  

Have you been watching Venus and the young moon? Enjoy these photos from the EarthSky community around the world. Thank you to all who shared images!

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2018-08-15 06:25:21



Bam! Meteorite bombardment created Earth’s oldest rocks  

A new computer modeling study shows that - some 4 billion years ago - a barrage of incoming debris from space likely formed what we know today as Earth's oldest rocks.

what do you think?

2018-08-15 01:51:12



What’s causing Florida’s algae crisis? 5 questions answered  

Red tides and a blue-green algae outbreak are fouling hundreds of miles of coast, killing fish and driving tourists from beaches. Some causes are natural, but human actions also play a role.

what do you think?

2018-08-15 01:34:43



Astronomers find weird rogue world with wild auroras  

This free-floating rogue planet - untethered to any star - has a magnetic field millions of times more powerful than Earth's and auroras much more brilliant than our world's northern lights.

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2018-08-14 06:44:31



Moon, Venus, Jupiter August 14 to 16  

Bright planets and an orbiting moon! Enjoy them on these August evenings.

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2018-08-14 04:52:47



The Scientists Who Starved to Death Surrounded By Food  

The 900-day Siege of Leningrad during the Second World War was perhaps one of the most gruesome sieges in modern history. Hitler's diabolic plan was to choke all food supply routes to the city of two million residents and let nature do the dirty work. "Leningrad must die of starvation", Hitler declared in a speech at Munich on November 8, 1941. The following winter, hundreds of thousands starved to death. People tried in vain to stay alive by eating sawdust. Others froze to death in the s...

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2018-08-13 17:32:00



Was the outer solar system shaped by a stellar fly-by?  

Computer modeling suggests that - billions of years ago, when our solar system was young - a star swept near, stealing some of our sun's material and creating the odd orbits of Kuiper Belt objects.

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2018-08-13 06:24:12



Favorite Perseid meteor shower photos  

2018 has been an exceptional year for the Perseids! Thanks, everyone, for submitting your photos. Here are a few of the editors' favs.

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2018-08-13 05:16:03



Wondrous moon and Venus on August 13  

On Monday evening, a great celestial drama begins as the moon sweeps by Venus. There are 4 bright planets in the evening sky now, and the moon will pass each one in turn.

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2018-08-13 03:47:48



Want to trick your ears?  

You'll enjoy this video of audio illusions from the guys at AsapSCIENCE. Can you understand the talking piano?

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2018-08-12 02:45:05



The unique elephant brain  

Today is World Elephant Day. Here's a look at how unique brain structures - different from those of any other mammal - are responsible for elephants' special abilities in learning and memory.

what do you think?

2018-08-12 02:07:06



Jupiter’s moon Ganymede has powerful chorus waves  

Chorus waves can be converted to sound. The ones around Earth sound like singing or chirping birds. Jupiter has stronger chorus waves, and now its large moon - Ganymede - has been found to have chorus waves a million times stronger than Jupiter's.

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2018-08-12 01:19:13



Potomac River sunrise  

An early August morning in Mt. Vernon, Virginia. Photographer Greg Diesel-Walck? wrote, "Glorious beams this morning at sunrise over the Potomac River."

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2018-08-11 01:38:48



The Strange Case of Kijong-dong And Daeseong-dong  

After three years of bloody conflict that saw three million people dead, the two neighboring countries, North and South Korea, entered into an armistice in 1953 agreeing to end all hostilities of the Korean War but never quite agreeing to peace. As a result, the border between the two countries is still one of the most heavily armed regions in the world enclosed by barbed wire fences and dotted by land mines, and surrounded by hundreds of thousands of soldiers. As part of the armistice signed,

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2018-08-10 11:59:00



Bedale's House For Leeches  

On the banks of the Bedale Beck, in the small market town of Bedale in North Yorkshire, stands one of the most unusual historic buildings in the whole of UK. Between the late 18th and the early 19th century, this small brick building was used to store medicinal leeches used by local doctors for bloodletting, a common procedure for treating a variety of ailments. The local apothecary kept leeches alive in special containers using fresh water diverted from the river flowing just a few feet from t

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2018-08-10 11:57:00



How NASA will shield solar probe from crazy heat  

The Parker Solar Probe, expected to launch Saturday, will get closer to the sun than any spacecraft in human history. How will the spacecraft withstand the heat?

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2018-08-10 03:06:22



Fire cloud over California, from space  

A pyrocumulus cloud - sometimes called a fire cloud - forms when intense heat from wildfires causes air to rise. Californians have been seeing these towering clouds this July and August.

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2018-08-10 01:16:57



Partial solar eclipse on August 11  

The August 11, 2018 partial solar eclipse happens will be seen in the Arctic, far-northeastern Canada, Greenland, Iceland, Scandinavia, and much of Asia (north and east).

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2018-08-09 15:07:37



Astronomers discover new, enigmatic fast radio burst  

Fast radio bursts - aka FRBs - are brief, powerful, puzzling bursts of radio waves from deep space. Now astronomers have detected a new and even more unusual type of FRB.

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2018-08-09 06:56:59



Sky-wide rays  

Familiar crepuscular rays and less well known anticrepuscular rays are really one and the same.

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2018-08-09 02:50:42



A spacecraft to touch the sun  

Set to launch August 11, the daredevil Parker Solar Probe will get closer to the sun than any spacecraft in human history.

what do you think?

2018-08-09 01:34:31



Prehistoric mass graves linked to tsunamis  

"We were able to make a strong case for many of these sites being related to major tsunamis, as opposed to more standard explanations like warfare or an epidemic."

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2018-08-08 14:43:50



Posthumous Execution  

The execution of Oliver Cromwell, Henry Ireton and John Bradshaw in 1661, from a contemporary engraving. Oliver Cromwell, the 1st ruler of the Commonwealth of England, Scotland, and Ireland, was born in Huntington, Cambridge on April 25, 1599. He died on September 3, 1658, from sepsis following a urinary infection. And he was executed on January 30, 1661—more than two years after his natural death. This makes Oliver Cromwell one of very few people who has been executed posthumously. Throughou...

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2018-08-08 11:47:00



China's Ready-Made Urban Forests  

Since the past few years, the Chinese government has been planting thousands of trees in cities across the country hoping to create an urban forest that would fight pollution as well as bring shade to public spaces. The effort is laudable, but if you are to investigate the origin of some of these trees, you'll discover a disturbing process. A large number of these trees were not grown in their current urban location, but were relocated as mature trees from rural areas. "The whole concept of ...

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2018-08-08 11:42:00



Moonless nights ahead for the Perseids  

It'll be a great year for the annual Perseid meteor shower. Don't miss this preview by Guy Ottewell, which has the best charts you'll find anywhere online.

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2018-08-08 06:28:42



Plate tectonics not necessary for alien life?  

New research indicates that plate tectonics may not be necessary for life to evolve after all, increasing the chances that more exoplanets could support life of some kind.

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2018-08-08 01:36:55



Evening’s 2 arcs  

Draw a line between the 4 bright planets up after sunset now, and you'll see they make an arc across the sky. In this photo, Michael Seeley in Florida contrasted the arc of planets with that of the Milky Way.

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2018-08-08 01:25:47



The EIRE Signs of World War 2  

The recent heat wave in the UK has revealed more than ancient henges. Over at Bray Head, on the Irish coast, a short distance away from Dublin, a wildfire stoked by the hot weather has revealed a World War Two-era landmark that had disappeared under thick undergrowth for many years. It's an aerial sign made by arranging rocks and boulders to spell out the word "EIRE", which means Ireland in the Irish language. More than eighty such signs dotted across Ireland's coast during the Second W...

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2018-08-07 23:28:00



Speck from an asteroid  

Viewed under a microscope, it resembles a human hair. But this is actually an extremely precious speck of dust - a tiny sample from the Itokawa asteroid, brought back to Earth by Japan's Hayabusa mission.

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2018-08-07 05:14:47



2017 was 3rd warmest year on record, says international report  

According to the annual State of the Climate report, 2017 was the globe's 3rd-warmest year on record, behind 2016 (1st) and 2015. Earth also experienced record-high greenhouse gas concentrations and rises in sea level.

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2018-08-07 04:49:18



August 8 and 9 before sunup: Moon in Gemini  

The moon has now waned to a slim crescent phase. It's near the stars Castor and Pollux - the legendary Gemini "twins" - on August 8 and 9, 2018.

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2018-08-07 02:57:57



The Seven Bridges of Königsberg  

Wedged between Poland and Lithuania, along the Baltic Coast, is a piece of Russia located 200 miles away from the Russian border. The Kaliningrad oblast, an exclave of Russia, was originally a Prussian state before it was transferred over to the Soviet Union after the end of the Second World War when the Allied powers met at Potsdam to decide who gets which territory. Back then Kaliningrad was known as Königsberg. If that name doesn't ring any bells then you are definitely not a mathematician...

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2018-08-06 15:16:00



The Grave of Florence Irene Ford  

The Natchez City Cemetery in Adams County, Mississippi, is home to several unusual tombstones. There is one called the "Turning Angel", which is a statue of an angel that's carved such a way so as to form an optical illusion. When approaching the statue from the correct angle, the angel appears to turn towards the visitor. There is also a large three-tier tombstone whose rather large size is accounted for by the fact that there is rocking chair inside—as was the wish of Rufus E. Case, wh...

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2018-08-06 12:56:00



Think sharks are coolest ocean predators? Consider mantis shrimps  

Do sharks have bullet-like strikes? Do they have super-vision? Can they take down prey in milliseconds? Mantis shrimps have these abilities - and more - to make them among the world's most impressive predators.

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2018-08-06 03:23:49



See it! Crepuscular rays  

Those beams of light shooting out from the horizon or down from the clouds are called crepuscular rays, or sunrays. Beautiful, mysterious and very noticeable.

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2018-08-05 06:13:55



Scientists identify best exoplanets for Earth-like life  

Scientists have now identified some exoplanets that might have suitable temperatures for liquid water and enough UV light for the chemistry thought to have led to life on Earth.

what do you think?

2018-08-05 01:54:31



The Underground Rivers of London  

Where London is situated today was once the floodplains of the river Thames, surrounded by gently rolling hills and valleys carved by the river itself and its innumerable tributaries. London originally began on the Thames' north bank and for many centuries London Bridge was the only bridge over the Thames close to the city. But as the city grew, the marshlands and streams feeding the Thames began to get in the way of growth and were gradually buried under streets and houses. "Today, in man...

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2018-08-04 12:20:00



Palace of Shaki Khans  

The city of Shaki in northern Azerbaijan is situated more than 300 km from Baku—too far away for most tourists to make the trip, but is home to the most valuable monument to the Shaki khanate which ruled over the country for more than 75 years in the 18th and 19th centuries. Shaki was the capital of the Shaki khanate, whose seat of power was in the Palace of Shaki Khans, which was also the summer residence of Shaki Khans. The Palace, known for its magnificent interior and exterior decorated w...

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2018-08-02 21:43:00



Mount Sunflower: The Tallest Peak With The Easiest Climb  

Situated at a formidable height of 4,039 feet above sea level, the lofty summit of Mount Sunflower is the highest point in the state of Kansas, the United States. Yet, it's barely noticeable and virtually indistinguishable from the surrounding plain. There is no peak here that you can stand upon and take in the breathtaking view. Just a small bump in the middle of a private ranch located half a mile from the Colorado border. Mount Sunflower is perhaps the only 4,000-plus-feet peak that you can...

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2018-08-02 17:11:00



Why wildfires are bigger and harder to control  

It's a perfect storm of factors - including climate change, development, past forest management policies and current firefighting practices, says forestry expert.

what do you think?

2018-08-02 02:33:30



Where to look for life on Titan  

Saturn's moon Titan has lakes and seas, filled with liquid ethane and methane. But they might not be the best places to look for life, according to new research.

what do you think?

2018-08-02 02:05:28



The Bamboo Bridge of Kampong Cham That is Built And Dismantled Every Year  

Across the turbid waters of the Mekong River, in eastern Cambodia, runs a long rickety bamboo bridge connecting the river island of Koh Pen, that sits in the middle of Mekong, to the river's western banks where lies Cambodia's sixth largest city—Kampong Cham. This bamboo bridge is seasonal: it's built every dry season when the waters of the Mekong River recede and become too shallow for ferry. Then at the start of each rainy season, before the rivers swell, the bridge is dismantled by h...

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2018-08-01 21:18:00



Dust in space: 10 cool things to know  

In space, dust comes from comets and exploding stars. It can form planetary rings, drive global weather patterns and even form the seeds of new planets.

what do you think?

2018-08-01 04:38:23



Canary Girls: The World War One Women Who Turned Yellow  

Munition workers in a shell warehouse at National Shell Filling Factory No.6, Chilwell, Nottinghamshire in 1917. Photo credit: Imperial War Museum The role women played in the two World Wars is well known and well appreciated. As men went off to fight the war, positions previously held by men in factories and other services were quickly filled by women. Women worked the assembly line, drove trucks, served as air raid wardens and as nurses, worked in communications, intelligence, and performed h

what do you think?

2018-07-31 16:10:00



Which lizards can outlast a hurricane?  

In the wake of hurricanes Irma and Maria, researchers document how catastrophic storms can be agents of natural selection, influencing how species evolve.

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2018-07-31 06:12:15



Reaching to the stars  

Photographer Miska Saarikko titled this image Reaching to the Stars.

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2018-07-31 04:29:27



20 years of tracking Near-Earth Objects  

Asteroid on a collision course with Earth? These astronomers will likely see it first. NASA's Center for Near-Earth Object Studies - now entering its 3rd decade - makes over 90 percent of near-Earth asteroid and comet discoveries. Here's how and why they do their work.

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2018-07-31 03:44:17



Siberia's Cold Storage Ice Tunnels  

The Yamal Peninsula in northwest Siberia stays covered in permafrost all throughout the year, and while the winters are chilly, summers are comparatively warm, at least by Siberian standards. So when a fish processing plant was built here in the mid 20th century, what was urgently needed was a cold storage facility where fish caught in the Arctic waters could be stored before they are processed, packed and exported to western Europe. The processing plant was located in the village of Novy Port o

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2018-07-30 21:36:00



Mars closest to Earth on July 30-31  

Closer than since 2003! Even closer now than when we passed between Mars and the sun last Friday. How that can happen, and the prospects for viewing Mars through a telescope now.

what do you think?

2018-07-30 02:29:42



12 shark facts that might surprise you  

A dozen interesting facts about sharks.

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2018-07-30 01:03:13



An easier way to search for life on Europa  

Jupiter's moon Europa is a promising place to search for evidence of alien life. New research provides insights on what might be the best - and easiest - way to search.

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2018-07-29 07:08:48



Every point is a galaxy  

At first glance, it's just a square filled with tiny grains of static. But incredible as it is to imagine, every single point of light in this image is actually a distant galaxy, as observed by ESA's Herschel Space Observatory.

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2018-07-29 01:20:19



London's Secret Nuclear Reactor  

For more than 30 years, between 1962 and 1996, a nuclear reactor sat at the heart of London tantalizingly close to a busy thoroughfare and to people's homes and public buildings. Its existence, so close to the metropolis was kept a secret from the public, because to tell the truth would have been extremely controversial. The reactor was located at the basement of King William Building at the old Royal Naval College in Greenwich. The Royal Naval College was established in 1873 and was housed in...

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2018-07-28 16:03:00



Beautiful photos! Full moon eclipse and Mars  

Earth flew between the sun and Mars this week, so, during yesterday's total lunar eclipse, the moon and Mars were close. Photos from the EarthSky community here.

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2018-07-28 13:13:28



We’re in the middle of an eclipse season  

An eclipse season lasts a little over one lunar month and typically includes 1 solar and 1 lunar eclipse. In 1 out of 7 eclipse seasons, the 1st eclipse comes early. Then we can have 3 eclipses. Watch for a 3rd eclipse in this eclipse season, in August!

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2018-07-28 10:01:03



Night-shining clouds over Estonia  

Kairo Kiitsak captured an impressive display of noctilucent, or night-shining, clouds, in Simuna, Estonia on July 26, 2018. Noctilucent clouds are seen at high latitudes only from about mid-May to August. Wondrous, if you can catch them!

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2018-07-28 04:32:04



The July 27 total eclipse of the moon  

More details and more charts, from Guy Ottewell.

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2018-07-27 06:22:51



Century’s longest lunar eclipse July 27  

It'll be the longest total lunar eclipse of this century, with Mars - at its brightest - nearby. Red moon, red Mars. It doesn't get any better than this.

what do you think?

2018-07-27 05:19:15



Most Mars dust comes from one place  

"Mars wouldn't be nearly this dusty if it wasn't for this one enormous deposit that is gradually eroding over time and polluting the planet, essentially."

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2018-07-27 02:30:51



The Great Texas Train Crash at Crush  

Some publicity stunts can be complete train wrecks. Like that one time in 1613 when a real cannon was used to spice up the production of Shakespeare's Henry VIII causing the entire Globe Theatre to burn to ground, or that time when the US Department of Defense decided to fly a Boeing 747 real low over Manhattan for a photo-shoot causing thousands of New Yorkers to nearly die of heart attack. Then, there are train wrecks that are publicity stunts. From the late 1800s to the early 1900s, stage

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2018-07-26 12:56:00



Subsurface lake discovered on Mars?  

ESA's Mars Express spacecraft has discovered the 1st evidence for a subsurface liquid lake on Mars. If it exists, this lake is likely salty and cold, but possibly habitable for some microorganisms.

what do you think?

2018-07-26 05:15:19



Mars and moon meet at midnight  

Best insights - and best charts - anywhere online about Mars' wonderful July 2018 opposition and meet-up with the moon on the dome of Earth's sky.

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2018-07-26 05:15:11



China's Waterfall Skyscraper  

In a country where new buildings rise up every single day, it's a challenge for architects to come up with original designs that stand out among the crowd of skyscrapers choking the skyline of Chinese cities. This has pushed some architects towards refreshingly new designs such as the moving façade of Shanghai's Bund Finance Center. But nobody expected a waterfall. So when the 397-foot-tall Liebian Building in Guiyang, China, turned the faucet for the first time, panicked residents called l...

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2018-07-25 20:46:00



Trona Pinnacles  

This unique geological feature, called Trona Pinnacles, are located about 10 miles south of the mining community of Trona, in California's desert. Rising out of the dried up bed of Searles Lake, the pinnacles are composed primarily of calcium carbonate, also known as tufa, and are very similarly to those found in Mono Lake. The pinnacles vary in size and shape from short and squat to tall and thin. Some of the taller ones are as high as 40 meters. Photo credit: Tony Hoffarth/FlickrRead more ...

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2018-07-25 12:38:00



Space-based solar power: How close to reality?  

The technology is further along than you might think for capturing solar energy in space - where the sun always shines - and beaming it to Earth.

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2018-07-25 04:48:21



The vanishing of the 1st American dogs  

"It is fascinating that a huge population of dogs that inhabited all corners of the Americans for thousands of years could have disappeared so rapidly."

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2018-07-25 04:47:59



The case for a habitable moon  

Billions of years ago, Earth's moon might have 2 periods suitable for life. In a new paper, scientists describe the possibility of microbes thriving in water pools on the moon until the surface became dry and dead.

what do you think?

2018-07-25 04:41:37



Tennessee double rainbow  

Becky Gillum captured this double rainbow in Cherokee Lake, Tennessee. She said, "With all the storms we've been having, it was only a matter of time until a rainbow appeared."

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2018-07-25 03:40:17



Watch the moon sweep past bright Mars at opposition  

Earth passes between Mars and the sun on July 27, 2018 (night of July 26 for the Americas). It's best time to see Mars in some 15 years. Plus ... the moon gets in on the act.

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2018-07-25 03:23:33



Demonstration of a Cantilever Bridge  

A cantilever bridge is a bridge whose main elements are cantilevers—structures that are anchored at only one end while the other end floats horizontally without any support. A simple cantilever bridge consist of two cantilever arms extending from opposite sides of an obstacle to be crossed, such as a river. But the cantilever arms do not meet in the center; instead, they support another span—a central truss bridge which rests on the ends of the cantilever arms. Back in the 19th century, when...

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2018-07-24 20:56:00



The Domes of Fabedougou  

These weathered rocks in the village of Fabedougou, near Banfora, in south-western Burkina Faso resemble the sandstone towers of Bungle Bungle Range in Australia. But the Domes of Fabedougou have an entirely different origin. While the Bungle Bungle Range is barely half a million years old, the sandstones comprising the Domes of Fabedougou are nearly 2 billion years old or Middle Proterozoic. Usually, a 2 billion year old rock would have been metamorphosed by the extreme heat and pressure gener

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2018-07-24 16:11:00



Young star caught eating its planet  

It had been theorized that some young stars might devour their planets. Now astronomers have the 1st solid evidence - from the Chandra X-ray Observatory - of just such an event caught in the act.

what do you think?

2018-07-24 08:28:38



Cropmarks: How Dry Weather Can Reveal Hidden Archaeological Sites  

Across Europe, and the world at large, there are a large number of archeological sites yet to be discovered. Many of these ancient settlements have disappeared from the face of the earth because their structures were made predominantly of wood and earth. Wood decays and any earthen feature has since been eroded by centuries of ploughing. Nevertheless, evidence of prehistoric activity survives below ground, and during spells of extreme drought and heat, these ghosts of the past appear mysteriousl

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2018-07-23 23:50:00



The Milky Way’s long-lost sibling  

Two billion years ago, the Andromeda galaxy - closest large spiral galaxy to our Milky Way - might have eaten another large galaxy.

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2018-07-23 21:43:43



Wow! New volcano on Jupiter’s moon Io  

Io is small, but it's the most volcanically active world in our solar system. It has hundreds of active volcanoes. Now the Juno spacecraft has found one more.

what do you think?

2018-07-23 08:50:38



Moon between Antares and Saturn  

It's getting exciting up there! We're headed for a brightest Mars, and a long lunar eclipse, on July 27. Get in the mood by identifying Saturn and red star Antares near tonight's moon.

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2018-07-23 03:12:44



Moon north of star Antares on July 22  

The name Antares derives from the Ancient Greek and means rival to Ares - that is, rival to Mars. Like Mars, Antares is red in color. Antares is sometimes brighter than Mars, it's no match for Mars now!

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2018-07-22 05:56:51



Amazing Kilauea volcano imagery you might have missed  

For more than 2 months, lava has been pouring from Hawaii's Kilauea volcano, destroying homes and remaking the land. A compilation of photos and videos, here.

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2018-07-22 05:11:02



These spacecraft are studying Mars dust  

Raging, planet-wide dust storms - like the one going on now - happen only every 6 to 8 years on Mars. Here's how NASA spacecraft are studying it, plus a cool before-and-after video! 

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2018-07-22 02:27:25



Battle of Kohima: The Greatest World War Two Battle Everyone Forgot  

Perched on top of a mountain ridge, some 5,000 feet up in the remote hilly terrain of northeast India, lies the town of Kohima, in what is now the state of Nagaland. During the Second World War, one of the most decisive battles in the Burmese front took place here—the one that thwarted the Japanese invasion of India and helped turn the tide of the war in the Far East. Like most battles that took place in the South-East Asian theater, the Battle of Kohima remains relatively unknown because the ...

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2018-07-21 13:26:00



Dust storm rolls in on Mars  

Forecast for Mars: dust! This smaller storm appeared on Mars in April, 2018, prior to the planet-wide storm happening now.

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2018-07-21 03:38:53



Morwellham Quay: A Historic Copper Port  

Just four miles to the southwest of Tavistock, in Devon, England, "bordering the beautiful River Tamar, amidst towering cliffs and gently rolling farmland", lies Morwellham Quay—a historic river port that developed more than a thousand years ago to support the local mines. Strategically located at the center of the Tamar Valley Mining District and only nine miles north of Plymouth, Morwellham, together with nearby Tavistock, forms the easternmost gateway area to the rest of the peninsula. ...

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2018-07-20 23:52:00



Tower of The Winds: The World's First Weather Station  

The Tower of the Winds, or the Horologion of Andronikos Kyrrhestes, is an elegant octagonal marble tower in the Roman Agora in Athens. It is considered to be the world's first meteorological station. More than 2,000 years old, the tower has eight sides corresponding to the eight principle winds, a sundial to tell time, a wind vane to show the direction of wind and an interior water clock that in antiquity could be read even in darkness. Each of the building's eight sides face a point of the ...

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2018-07-20 13:14:00



On July 20, the bright “star” near the moon is Jupiter  

As soon as darkness falls on July 20, use to moon to find the dazzling king planet Jupiter nearby. Then, over the new few evenings, the moon can help you identify the bright red star Antares.

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2018-07-20 06:15:22



Mars from the International Space Station  

Astronaut photo of Mars from the International Space Station (ISS), In this image, Mars has been highlighted and enlarged 20 times.

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2018-07-20 05:26:51



Is the moon toxic to humans?  

When the Apollo astronauts returned from the moon, the dust that clung to their spacesuits made their throats sore and their eyes water. Lunar dust is made of sharp, abrasive particles, but how toxic is it for humans?

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2018-07-20 04:58:09



Apollo and the moon-landing hoax  

Why do people persist in denying that human beings landed on the moon?

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2018-07-20 03:19:18



The Story Behind Sydney's 'Eternity' Graffiti  

For over twenty five years, from 1930 to 1956, the people of Sydney woke up each day to a one-word in yellow crayon on footpaths, train station platforms, and perimeter walls lining the city's many walkways and streets. Each day a fresh batch of graffiti rendered in beautiful copperplate lettering style  would appear at places where there weren't any the previous night. Somehow, for twenty five years, a mysterious figure had managed to sneak into the ci...

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2018-07-19 21:18:00



Before The Internet, What People Asked New York Public Library's Librarians?  

Before there was the Internet and Google, the only way to find answers to a pressing question was to visit the local library and ask the all-knowing librarian. A few years ago, the staff at the New York Public Library discovered a box of cards containing questions posed to the librarian by members of the public. These question were asked either in person or received via telephone. The telephone "ask a librarian" service was set up in 1967 and operates to this day. And surprisingly, despite ...

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2018-07-19 16:36:00



Volcano discovered under fastest-melting Antarctic glacier  

Antarctica's Pine Island Glacier is melting, thanks to warming waters from below. What's more, a recent study has discovered a volcano beneath the glacier.

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2018-07-19 10:17:21



Witness the birth of an iceberg  

This iceberg broke off Greenland's Helheim Glacier on June 22. If laid atop New York City, it'd stretch from lower Manhattan to Midtown.

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2018-07-19 05:56:42



Meteor, Mars and Milky Way  

Night sky over South Korea's Mount Seoraksan.

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2018-07-19 03:22:41



Astronomers discover 10 new moons for Jupiter  

Most planets have moons, and Jupiter already had the most. Now, with these new ones, Jupiter has a whopping 79 moons altogether ... so far.

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2018-07-18 05:42:56



Volcanic mood rings  

The crater lakes at the summit of Kelimutu volcano in Indonesia change colors from day to day. The colors can change from white, green, blue and brown to black.

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2018-07-18 01:31:22



Whoa! Flash flood footage from Utah  

Amazing flash flood footage from Utah, July 16, 2018.

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2018-07-17 10:06:26



June 2018 ties for 3rd-warmest June on record  

June 2018 continued the warming trend of the past 40 years. Plus, a word about the climate change myth that there's been no warming since 1998.

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2018-07-17 09:41:45



Uranus, Neptune, Pluto: A longer view  

Beloved astronomer Guy Ottewell announces his newest book.

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2018-07-17 05:08:29



Listen as Saturn and its moon interact  

Spacecraft observations reveal plasma waves moving from Saturn to its rings and its moon Enceladus. Researchers converted a recording of the plasma waves into an audible cosmic whoosh that you'll enjoy.

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2018-07-17 04:09:50






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