The universe's first galaxies were hot messes, according to a recent study. During their younger days, they were wild, ...

For centuries humanity has looked upward at the Milky Way's bright band and sought to understand its structure, composition and place in our universe. Thanks to modern technology, observatories are ...

The image of supermassive black hole Sagittarius A * was created using data from the Event Horizon Telescope Collaboration.

Are we truly alone—or just unable to hear anyone else? A NASA scientist suggests alien tech may exist, but not in the form we've always imagined.

Whenever someone talks about black holes, they almost always talk about the event horizon and the singularity. After all, ...

Researchers have discovered the largest black hole plasma jets ever in a galaxy almost 7 billion light years away from Earth.