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Supernova Wreckage is Still Expanding at Extreme Speeds After 400 Years

   29 Aug 00:00:04  |  Universe Today

The gas and dust cast off by a supernova explosion keeps moving at a high speed for centuries.
The post Supernova Wreckage is Still Expanding at Extreme Speeds After 400 Years appeared first on Universe Today.

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Did a supernova cause the Devonian mass extinction event

   28 Aug 00:00:06  |  Universe Today

359 million years ago the Earth suffered one of its worst extinction events, and a team of researchers at the University of Illinois think that it might be caused by a series of supernova explosions no more than 35 light years away. Every once in a while something disastrous happens to life on Earth. The …
Continue reading "Did a supernova cause the Devonian mass extinction event?"
The post Did a supernova cause the Devonian mass extinction event? appeared first on Universe Today.

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Comet NEOWISE Was Spiraling and Spinning as it Passed by Earth

   28 Aug 00:00:06  |  Universe Today

Earlier this week, we shared an image of Comet NEOWISE (C/2020 F3) taken by the Hubble Space Telescope. And now, here are a group of images from the 8.1-metre Gemini North telescope in Hawaii. Like Hubble, Gemini North focused in on the comet?s nucleus and coma, instead of its stunning, gossamer tails. But Gemini zoomed …
Continue reading "Comet NEOWISE Was Spiraling and Spinning as it Passed by Earth"
The post Comet NEOWISE Was Spiraling and Spinning as it Passed by Earth appeared first on Universe Today.

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It Rained So Hard on Ancient Mars that Craters Filled Up and Overflowed

   27 Aug 00:00:09  |  Universe Today

Figuring out the ancient climate on Mars has been tricky. While evidence gathered from orbit and on the surface seems to indicate there must have been a lot more water on Mars early in its history, questions remain on how much water and in what form. A new study has now quantified the amount of …
Continue reading "It Rained So Hard on Ancient Mars that Craters Filled Up and Overflowed"
The post It Rained So Hard on Ancient Mars that Craters Filled Up and Overflowed appeared first on Universe Today.

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One Theory Beyond the Standard Model Could Allow Wormholes that You Could Actually Fly Through

   27 Aug 00:00:09  |  Universe Today

A new study by a team of theoretical astrophysicists shows that stable wormholes could exist, but don't expect them to be a practical means of space travel.
The post One Theory Beyond the Standard Model Could Allow Wormholes that You Could Actually Fly Through appeared first on Universe Today.

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Did Jupiter Push Venus Into a Runaway Greenhouse

   26 Aug 00:00:16  |  Universe Today

Venus has been garnering a lot of attention lately, though primarily in the scientific community as the last Hollywood movie about the planet was released in the 1960s.  This is in part due to its dramatic difference from Earth, and what that difference might mean for the study of exoplanets.  If we can better understand …
Continue reading "Did Jupiter Push Venus Into a Runaway Greenhouse?"
The post Did Jupiter Push Venus Into a Runaway Greenhouse? appeared first on Universe Today.

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Everyone Took Pictures of Comet NEOWISE, Including Hubble

   26 Aug 00:00:16  |  Universe Today

This summer we were (finally) treated to a spectacular, naked-eye comet, C/2020 F3 NEOWISE. And while seeing it with our own eyes was a joy, it was incredible to see the varied photos of NEOWISE taken by people around the world, showing the comet?s long gossamer tails, filled with detail and color. (See our gallery …
Continue reading "Everyone Took Pictures of Comet NEOWISE, Including Hubble"
The post Everyone Took Pictures of Comet NEOWISE, Including Hubble appeared first on Universe Today.

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Completely Harmless Asteroid Almost Certainly Won?t Hit Earth Just Before the US Election

   25 Aug 00:00:17  |  Universe Today

In a year of devastating wildfires, destructive derechos, early and active hurricanes, widespread social unrest, contentious politics and more — all amid an unprecedented global pandemic — it might seem fitting that ?asteroid impact? would be added to the 2020 bingo card. While weekend headlines buzzed over the prediction of an asteroid hitting Earth on …
Continue reading "Completely Harmless Asteroid Almost Certainly Won’t Hit Earth Just Before the US Election"
The post Completely Harmless Asteroid Almost Certainly Won’t Hit Earth Just Before the US Election appeared first on Universe Today.

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Scientists Recreate the Density of a White Dwarf in the Lab

   25 Aug 00:00:16  |  Universe Today

Inside a white dwarf, atoms are squeezed almost to the point of collape. Now we've created this matter in a lab.
The post Scientists Recreate the Density of a White Dwarf in the Lab appeared first on Universe Today.

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Some Astronomers Think Betelgeuse Dimmed Because it ?Sneezed?. And it Might be Getting Ready to do it Again

   23 Aug 00:00:16  |  Universe Today

An international team of researchers has proposed a new explanation for why Betelgeuse has been mysteriously dimming, just as it started dimming again!
The post Some Astronomers Think Betelgeuse Dimmed Because it “Sneezed”. And it Might be Getting Ready to do it Again appeared first on Universe Today.

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