Astronomers say big cool patches on the Betelgeuse star likely drove its surprise dimming last year.
Tags: astrophysics space astronomy stars
An unseen object is found to be lurking in a double-star system a mere 1,000 light-years from Earth.
Tags: astrophysics astronomy black-holes
The team behind the first image of a black hole reveals something else from that historic picture.
Tags: astrophysics astronomy space-exploration black-holes
A mission to launch thousands of satellites is about to begin, but scientists say this could affect astronomy.
Tags: astrophysics space astronomy spacex oneweb communications-satellites
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