NASAのインスタグラム(nasa) - 4月30日 09時10分

We captured possible 'screams' from zombie stars! Peering into the heart of the Milky Way galaxy, our Nuclear Spectroscopic Telescope Array (NuSTAR) has spotted a mysterious glow of high-energy X-rays that, according to scientists, could be the "howls" of dead stars as they feed on stellar companions. The center of our Milky Way galaxy is bustling with young and old stars, smaller black holes and other varieties of stellar corpses - all swarming around a supermassive black hole called Sagittarius A*. Astronomers have four potential theories to explain the baffling X-ray glow, three of which involve different classes of stellar corpses. When stars die, they don't always go quietly into the night. Unlike stars like our sun, collapsed dead stars that belong to stellar pairs, or binaries, can siphon matter from their companions. This zombie-like "feeding" process differs depending on the nature of the normal star, but the result may be an eruption of X-rays.

Image Credit: NASA/JPL-Caltech

#nasa #nustar #galaxy #astronomy #milkyway #blackhole #science

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