Astrophysics

Alien Life, Exotic Objects

The “Wow! Signal,” not surprisingly, was a dud

Exotic Objects

How can a black hole pull light into itself if a photon is massless?

Solar System, Stars

Waves may be heating the solar wind — and two spacecraft caught them in action

Galaxies, Science

Event Horizon Telescope captures highest-resolution images ever taken from the ground

Cosmology, Exotic Objects

How merging black holes could reveal the nature of dark matter

Science

Astronomers are rallying to save NASA’s Chandra X-ray Observatory

Science

How does spectroscopy work?

Science

What is a light echo?

Science

10 modern mysteries of the universe

Cosmology

Is there a hottest temperature possible in the universe?

Science, Solar System

Edmond Halley: The man behind the comet

Science

Objects like Arrokoth could preserve ‘primitive ices’ from the birth of our solar system