A nearby active galaxy called VV 340a offers a dramatic look at how a supermassive black hole can reshape its entire host.

When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration of the local bubble, which surrounds our solar system. An interstellar cloud of ...

Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short of the total matter produced in the Big Bang 13.6 billion years ago. In ...