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 second, core-shattering explosion.
source https://www.sciencedaily.com/releases/2025/07/250702214141.htm
Superheated sediments in a submarine pressure cooker—an unexpected source
of deep-sea hydrogen
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The mid-ocean ridge runs through the oceans like a suture. Where Earth's
plates move apart, new oceanic crust is continuously formed. This is often
accompa...
2 hours ago
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