A supernova is the catastrophic explosion of a star. Thermonuclear supernovae, in particular, signal the complete destruction of a white dwarf star, leaving nothing behind. At least that's what models and observations suggested.
Astronomy
Jun 23, 2022
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To human eyes, the night sky between the stars appears dark, the void of space. But X-ray telescopes capture a profoundly different view. Like a distant fireworks show, our images of the X-ray sky reveal a universe blooming ...
Astronomy
Jun 21, 2022
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Scientists from the RIKEN Cluster for Pioneering Research have used computer modeling to show how a hypothesized type of supernova would evolve on the scale of thousands of years, giving researchers a way to look for examples ...
Astronomy
May 6, 2022
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A study led by Dr. Zhang Jujia from Yunnan Observatories of the Chinese Academy of Sciences interprets the major observational features of luminous Type Ia supernovae through the over-abundance of nickel in outer ejecta.
Astronomy
Jan 13, 2022
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A team of astronomers has discovered the fastest optical flash of a Type Ia supernova, and reports a study in Astrophysical Journal Letters published on December 8.
Astronomy
Dec 9, 2021
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In 1929, Edwin Hubble published observations that galaxies' distances and velocities are correlated, with the distances determined using their Cepheid stars. Harvard astronomer Henrietta Swan Leavitt had discovered that a ...
Astronomy
Sep 13, 2021
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253
Astronomers have made the rare sighting of two stars spiraling to their doom by spotting the tell-tale signs of a teardrop-shaped star.
Astronomy
Jul 12, 2021
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Using ground-based facilities, astronomers from China and elsewhere have conducted extensive optical photometric and spectroscopic observations of the supernova SN 2017fgc, which exploded in the galaxy NGC 474. Results of ...
NASA's upcoming Nancy Grace Roman Space Telescope will see thousands of exploding stars called supernovae across vast stretches of time and space. Using these observations, astronomers aim to shine a light on several cosmic ...
Astronomy
May 26, 2021
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Determining how rapidly the universe is expanding is key to understanding our cosmic fate, but with more precise data has come a conundrum: Estimates based on measurements within our local universe don't agree with extrapolations ...
Astronomy
Mar 8, 2021
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