The Event Horizon Telescope only recently gave us the first images of the environment immediately surrounding a black hole.

Learn what a black hole is, how it forms, and how astronomers detect it. Understand the science behind black holes and their ...

Physicists show knotted cosmic strings may have dominated the early universe before collapsing to create matter—a theory ...

One other thing the Gaia data has been clarifying is that the Milky Way's disk is not serene and flat, but warped and ...

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A mathematical investigation of galactic data suggests elusive dark matter is confined to the rules of gravity.

Scientists have recently made a groundbreaking discovery, detecting gravitational waves from the formation of two newborn ...