How dangerous are nearby supernovae to life on Earth?
Life and supernovae don't mix.
Astronomy
Oct 27, 2022
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News tagged with supernovas
Using James Webb Space Telescope to study supernovae as source of heavy elements in the universe
In 1980's popular book "Cosmos," Carl Sagan wrote of what makes us: "All the elements of the Earth except hydrogen and some helium have been cooked by a kind of stellar alchemy billions of years ago in stars, some of which ...
Astronomy
Oct 20, 2022
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The most precise accounting yet of dark energy and dark matter
Astrophysicists have performed a powerful new analysis that places the most precise limits yet on the composition and evolution of the universe. With this analysis, dubbed Pantheon+, cosmologists find themselves at a crossroads.
Astronomy
Oct 19, 2022
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Supernova remnant SNR 0509-67.5 investigated with Chandra
Using NASA's Chandra X-ray observatory, astronomers have carried out an X-ray proper motion study of a supernova remnant known as SNR 0509-67.5. Results of the research, published October 5 on arXiv.org, yield essential information ...
Exploring the origin of the supersoft X-ray light curve
By simulating the feedback of the white dwarf (WD) to the periodic mass transfer driven by the X-ray irradiation on its companion, researchers led by Ph.D. candidate Zhao Weitao and Prof. Meng Xiangcun from the Yunnan Observatories ...
Astronomy
Oct 14, 2022
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Potential first traces of the universe's earliest stars
The very first stars likely formed when the universe was only 100 million years old, less than one percent its current age. These first stars—known as Population III—were so titanically massive that when they ended their ...
Astronomy
Sep 28, 2022
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Can astronomers predict which stars are about to explode as supernovae?
In a recent study submitted to High Energy Astrophysical Phenomena, a team of researchers from Japan discuss strategies to observe, and possibly predict precursor signatures for an explosion from Local Type II and Galactic ...
Astronomy
Sep 19, 2022
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On its hunt for dark energy, a telescope stopped to look at the Lobster Nebula
If you thought dark matter was difficult to study, studying dark energy is even more challenging. Dark energy is perhaps the most subtle phenomenon in the universe. It drives the evolution of the cosmos, but its effects are ...
Astronomy
Sep 14, 2022
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Astronomers wind back the clock to determine the timeline of a stellar explosion
While astronomers have seen the debris from scores of exploded stars in the Milky Way and nearby galaxies, it is often difficult to determine the timeline of the star's demise. By studying the spectacular remains of a supernova ...
Astronomy
Sep 12, 2022
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NASA's Fermi telescope confirms star wreck as source of extreme cosmic particles
Astronomers have long sought the launch sites for some of the highest-energy protons in our galaxy. Now a study using 12 years of data from NASA's Fermi Gamma-ray Space Telescope confirms that one supernova remnant is just ...
Astronomy
Aug 10, 2022
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