Astronomers studying the remnant SNR 0509-67.5 have finally caught a white dwarf in the act of a rare “double-detonation” supernova, where an initial helium blast on the star’s surface triggers a ...

In other cases, another member of the system will go on to form a second white dwarf. If gravitational instabilities bring ...

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The explosion of a star, called a supernova, is an immensely violent event. It usually involves a star more than eight times ...

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

Pictures of a distant supernova remnant show two concentric rings, providing clear evidence that exploding white dwarf stars ...