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+25 +1
Gravity reveals true size of giant quakes
Researchers have developed a new approach to estimate the true size of very large earthquakes. At present, scientists use seismic waves from a rupture to work out the scale of the event. But a new analysis of the Tohoku earthquake in Japan in 2011 shows that changes in gravity can give more rapid information.
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Huge Bubble of Hot Rock May Be Rising Under New England
At first glance, New England doesn’t seem like a hotbed of geologic activity. The region doesn’t have any rumbling volcanoes. Earthquakes are almost unheard of. And its mountains are mere hills compared to ranges like the Rockies or the Sierra Nevada in the western U.S. But don’t underestimate what’s going on beneath the surface: It turns out this idyllic pocket of the northeastern U.S. may sit atop a rising mass of warm rock—a smaller, slower version of the magma pockets under well-known volcanic zones.
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Pangea Supercontinent With Modern Countries Labeled
This is a map of the Pangea supercontinent created by digital artist Massimo Pietrobon with all the modern countries labeled.
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The Earth’s magnetic poles are overdue for a switch
The satellites that control our world could be rendered useless. By Chelsea Gohd.
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The dinosaur-murdering asteroid maybe also triggered an underwater volcano meltdown
Why pick just one flavor of apocalypse? By Rachel Becker.
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+18 +1
Is Earth's Magnetic Field Heading for a 'Big Flip'? Probably Not (Right Now)
What we might be seeing is an excursion rather than a reversal event. By Erik Klemetti.
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+19 +1
Iceberg armadas boosted monsoon rains in a different hemisphere
New record of ice age climate from Brazilian caves tells of rainy times. By Scott K. Johnson.
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+12 +1
The Woman Who Reinvented the Moon
A MacArthur “genius grant” winner writes a new lunar origin story. By Brian Gallagher.
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Nobody knows why the Earth just rang like a bell
Seismic sensors first picked up the event originating near an island between Madagascar and Africa. Then, alarm bells started ringing as far away as Chile, New Zealand and Canada. Hawaii, almost exactly on the other side of the planet, also picked up the “event.” Nobody knows what it was. Meteorite? Submarine volcano? Nuclear test?
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Earthquake-detecting balloons could help reveal the inner structure o
Venus is a hellish environment. With a bone-dry, reddish-brown surface marred by thousands of volcanoes and covered in ancient lava flows, it’s not a place you want to spend your time. And sure, the planet has occasional rain showers, but they sprinkle sulfuric acid, not water, which likely taints the air with the smell of rotten eggs. At the surface, temperatures rise to over 850 degrees Fahrenheit (450 Celsius; hot enough to melt lead), and the pressure hovers around 90 times that of Earth.
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+18 +1
Strong planetary magnetic fields like Earth's may protect oceans from stellar storms
A study by scientists at ANU on the magnetic fields of planets has found that most planets discovered in other solar systems are unlikely to be as hospitable to life as Earth. Plants and animals would not survive without water on Earth. The sheer strength of Earth's magnetic field helps to maintain liquid water on our blue planet's surface, thereby making it possible for life to thrive.
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+35 +1
How Astronomers Missed the Massive Asteroid That Just Whizzed Past Earth
The space rock that just whizzed by Earth was up to 430 feet across.
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Traces of new dark matter candidate could be found in crystals deep inside the Earth
Although it outnumbers regular matter by a ratio of five to one, dark matter is frustratingly elusive. Many experiments have been and are being run to try to hunt down different types of candidate particles, but so far no direct trace has been found of any of them. Now, researchers from Max Planck have proposed a new hypothetical particle that might be behind dark matter – the superheavy gravitino – and outlined just how we might find them.
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+18 +1
Is Jupiter a Failed Star?
Although Jupiter is large as planets go, it would need to be about 75 times its current mass to ignite nuclear fusion in its core and become a star.
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NASA will hunt for tiny fossils on Mars
The Mars 2020 rover will investigate an intriguing type of mineral deposit known for producing fossils on Earth.
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Earth has acquired a brand new moon that's about the size of a car
Astronomers have spotted an asteroid that has been captured by Earth's gravity, making it a temporary mini-moon. It will probably fly away again in April
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Earth’s oxygen will be gone in 1 billion years | EarthSky.org
A billion years from now, as the sun heats up, the warmer atmosphere will break down carbon dioxide, killing off plant life, which in turn will shut off Earth's source of oxygen.
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Earth's core is neither solid iron, nor liquid. It's a whole lot weirder
We've known for a while that Earth's deepest depths, its "solid iron" inner core, isn't made of pure iron — and now scientists say it might not be solid either.
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Sensor breakthrough paves way for groundbreaking map of world under Earth surface
An object hidden below ground has been located using quantum technology—a long-awaited milestone with profound implications for industry, human knowledge and national security.
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+29 +1
Scientists uncover the largest crater on Earth under 100,000 years old
The impact crater is the second discovered in China.
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