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Thursday, April 9, 2020
Uncommon Supernova Might Fix The Secret Of How White Dwarfs Strongly Blow Up

Uncommon Supernova Might Fix The Secret Of How White Dwarfs Strongly...

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A newly spotted supernova drenched in hydrogen could offer proof for the binary-system theory of Type Ia supernovae. Although supernovas are so brilliant that they can be seen far across the Universe, astronomers still have a hard time figuring out exactly how they occur. Type Ia supernovae involve a white dwarf star, the dead core…
Pulsar Seen Scampering From the Supernova That Developed it

Pulsar Seen Scampering From the Supernova That Developed it

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When a star exhausts its nuclear fuel towards the end of its lifespan, it undergoes gravitational collapse and sheds its outer layers. This results in a magnificent explosion known as a supernova, which can lead to the creation of a black hole, a pulsar or a white dwarf. And despite decades of observation and research,…
What Will Occur When Betelgeuse Goes Supernova?

What Will Occur When Betelgeuse Goes Supernova?

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When Betelgeuse goes Supernova what will be the effects on Earth (not just the radiation but also the ejected gas shell)? originally appeared on Quora: the place to gain and share knowledge, empowering people to learn from others and better understand the world. Answer by Corey S. Powell, former editor in chief of Discover, on…
This Star Has Actually Been Going Nova Every Year, for Countless Years

This Star Has Actually Been Going Nova Every Year, for Countless...

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A nova star is like a vampire that siphons gas from its binary partner. As it does so, the gas is compressed and heated, and eventually it explodes. The remnant gas shell from that explosion expands outward and is lit up by the stars at the center of it all. Most of these novae explode…
Astronomers are Continuing to View the Shockwaves Expand from Supernova SN1987 A, as they Crash Into the Surrounding Interstellar Medium

Astronomers are Continuing to View the Shockwaves Expand from Supernova SN1987...

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When stars reach the end of their life cycle, many will blow off their outer layers in an explosive process known as a supernova. While astronomers have learned much about this phenomena, thanks to sophisticated instruments that are able to study them in multiple wavelengths, there is still a great deal that we don’t know…
Astronomers See the Specific Minute a Supernova Developed Into a Great Void (or Neutron Star)

Astronomers See the Specific Minute a Supernova Developed Into a Great...

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On June 17th 2018, the ATLAS (Asteroid Terrestrial-impact Last Alert System) survey’s twin telescopes spotted something extraordinarily bright in the sky. The source was 200 million light years away in the constellation Hercules. The object was given the name AT2018cow or “The Cow.” The Cow flared up quickly, and then just as quickly it was…
A Guide to Searching Zombie Stars

A Guide to Searching Zombie Stars

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Apparently not all supernovas work. And when they fail, they leave behind a half-chewed remnant, still burning from leftover heat but otherwise lifeless: a zombie star. Astronomers aren’t sure how many of these should-be-dead creatures lurk in the interstellar depths, but with recent simulations scientists are making a list of their telltale signatures so that…
A Supernova 2.6 Million Years Ago Might Have Wiped Out the Ocean’s Big Animals

A Supernova 2.6 Million Years Ago Might Have Wiped Out the...

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For many years, scientists have been studying how supernovae could affect life on Earth. Supernovae are extremely powerful events, and depending on how close they are to Earth, they could have consequences ranging from the cataclysmic to the inconsequential. But now, the scientists behind a new paper say they have specific evidence linking one or…
Enormous Triple Galaxy Produces this Unusual Swirling Pinwheel of Dust. And it Might be the Website of a Gamma Ray Burst

Enormous Triple Galaxy Produces this Unusual Swirling Pinwheel of Dust. And...

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When stars reach the end of their lifespan, many undergo gravitational collapse and explode into a supernova, In some cases, they collapse to become black holes and release a tremendous amount of energy in a short amount of time. These are what is known as gamma-ray bursts (GRBs), and they are one of the most…
Astronomers Lastly Found the Kind Of Star That Causes Type 1C Supernovae

Astronomers Lastly Found the Kind Of Star That Causes Type 1C...

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As astronomical phenomena go, supernovae are among the most fascinating and spectacular. This process occurs when certain types of stars reach the end of their lifespan, where they explode and throw off their outer layers. Thanks to generations of study, astronomers have been able to classify most observed supernovae into one of two categories (Type…

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