The Andromeda galaxy is our closest galactic neighbour, barring dwarf galaxies that are gravitationally bound to the Milky ...
Also called M31—and our closest giant neighboring galaxy ... the most distant of which is more than a million light-years from Earth. That’s almost half the distance to Andromeda.
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Extremely rare 'failed supernova' may have erased a star from the night sky without a tracebefore it burned up in Earth's atmosphere on Nov. 1, 2024. After spotting M31-2014-DS1, the astronomers saw it dim from 2016 to 2019, with follow-up observations in 2023 showing that it had ...
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Experts Baffled After a Star Vanished Strangely and Was Replaced by a Black Hole, 20 Times Greater in Mass"The dramatic and sustained fading of M31-2014-DS1 is exceptional in the landscape ... The required data on the star was gathered by Near-Earth Object Wide-Field Infrared Survey Explorer (NEOWISE ...
By the 1920's, M31 was clearly understood to be a grouping ... the Andromeda Nebula was over a million light years away from Earth. It was the largest distance ever measured, and its announcement ...
NASA’s Spitzer Telescope revealed the Milky Way’s hidden center, using infrared to uncover its dense, star-packed core. This ...
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