Darkness Visible, Finally: Astronomers Capture First Ever Image of a Black Hole

Astronomers at last have captured a picture of one of the most secretive entities in the…

Expected Soon: First-Ever Photo of a Black Hole

Have astronomers finally recorded an image of a black hole? The world will know on Wednesday.

Apocalypse Next? Astronomers Find a Chunk of Planet Around a Distant, Dead Star

A disk of debris around a faraway white dwarf offers a glimpse of our own planet’s…

Out There: When Sky & Telescope Had No Limit

A venerable astronomy magazine goes on the auction block, and a writer who grew up there…

Out There: Cut the Science Budget? Not So Fast

Contrary to first impressions, Congress has done a decent job standing up for scientific research.

Have Dark Forces Been Messing With the Cosmos?

Axions? Phantom energy? Astrophysicists scramble to patch a hole in the universe, rewriting cosmic history in…

Trilobites: Andromeda Is Coming for Our Milky Way Galaxy, Eventually

Traveling at 68 miles per second, a nearby galaxy is still coming to consume us, just…

Out There: Apollo 8’s Earthrise: The Shot Seen Round the World

Half a century ago today, a photograph from the moon helped humans rediscover Earth.

Riccardo Giacconi, Explorer of the Universe Through X-Rays, Dies at 87

A Nobel laureate, he traced the X-rays emitted by black holes, exploding stars and other violent…

11 Things We’d Really Like to Know: Does the Universe Still Need Einstein?

Physicists are no longer unified in the search for a unified theory.