Thursday, September 11, 2025

Stellar Slingshots Launch the Galaxy's Fastest Stars

Sirius B (seen at lower left in this image) is the closest white dwarf to Earth (Credit : NASA, ESA and STScI)

It’s really quite reasonable to assume the stars don’t move! Indeed that was the opinion of our ancestors however we now know they are far from stationary. Imagine a star racing through space so fast it could travel from Earth to the Moon in just three minutes. These are known as hypervelocity white dwarfs and they have puzzled astronomers for years. Now, a team of researchers have finally cracked the mystery of how they get launched at such incredible speeds.



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