At the end of the Universe, long after the last shining stars flickered, there could be one last explosion. Named black dwarf supernovae, these dazzling explosions will announce in the eternal darkness as the Universe falls asleep, a new study suggests. These newly proposed supernovae are a special race that …
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For the first time, pressure more than 100 times found in the Earth’s core has been generated in a lab, setting a new record. Using the highest energy laser system in the world, physicists have subjected short solid hydrocarbon samples to pressures up to 450 megabars, which means 450 million …
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In 1604, a white dwarf star went supernova. This is very normal behavior for a white dwarf star; but this one, at a distance of just 20,000 light-years from Earth, was visible to the naked eye, and documented by astronomers around the world, including the German astronomer Johannes Kepler. Kepler’s …
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Astronomers have detected a dazzling flash of ultraviolet light from an exploding white dwarf for the second time, and could give researchers important clues as to what stimulates the disappearance of these ancient worn-out stars. The researchers noticed this unusual supernova, called SN2019yvq, last December, just one day after the …
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A star discovered at full speed by the Milky Way is so strange that astronomers can only conclude that it was ejected during a very unusual supernova event. The star, a white dwarf about 1,430 light-years away called SDSS J1240 + 6710, and nicknamed Dox, advances at 250 kilometers per …
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