Astrophysics | Page 3 of 47 | Astronomy.com

Abell 370

Cosmology, Galaxies, Science

Dark Energy Explorers: How you can help unravel one of the universe’s biggest mysteries

Alien Life, Exotic Objects

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

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

simulation of merging supermassive black holes

Cosmology, Exotic Objects

How merging black holes could reveal the nature of dark matter

Artist's impression of the Chandra X-ray Observatory

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

three spectra

How does spectroscopy work?

V838 Monocerotis

What is a light echo?

10 modern mysteries of the universe

LHC at CERN

Is there a hottest temperature possible in the universe?

Painted in 1690 by Thomas Murray, this portrait features young Edmond Halley holding a paper with a diagram of an elliptical orbit.

Science, Solar System

Edmond Halley: The man behind the comet