What's up in
After an interstellar asteroid shot past the sun, scientists realized that there’s probably a lot of itinerant rocks out there.
The astrophysicist Janna Levin reflects on the newly unveiled, first-ever photograph of a black hole.
Astronomers claim in a new paper that star motions should make it easy for civilizations to spread across the galaxy, but still we might find ourselves alone.
Brief cosmic blips called fast radio bursts have puzzled astronomers since their discovery earlier this decade. Now researchers appear to be close to understanding what powers them.