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The luminous arms of the M99 galaxy were pictured during two Hubble observations.

A suspected pulsar is hungrily cannibalizing an unfortunate companion star 3,000 light-years from Earth.

An Earth-based telescope that looks for exploding stars and dangerous near-Earth asteroids is struggling with streaks from SpaceXs Starlink internet-beaming constellation.

Astronomers have spotted the brightest ever Ccow supernova shining in x-rays providing evidence the mysterious phenomenon might be driven by an emerging black hole or a neutron star.

Astronomers have found evidence of a black hole snacking on a star in data gathered back in the 1980s, according to new research.

Space Mysteries: An international team of astronomers is on the hunt for objects that should be impossible. Could the "missing stars" be a completely new phenomenon? (Image credit: Tobias Roetsch) Stars dont just vanish — or do they? For thousands of years, astronomers accepted the idea that the lights in the sky were fixed and unchanging. Even when it became clear that these lights were actually physical objects like the sun, one of the key assumptions for astrophysicists has been that they ...