Astrophysics | Page 3 of 47 | Astronomy.com

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

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

There isn’t a scale large enough to weigh galaxies like NGC 7714. ESA, NASA; Acknowledgement: A. Gal-Yam (Weizmann Institute of Science)

Ask Astro: How do scientists weigh planets and other celestial objects?

Exotic Objects, Milky Way

How do you find a black hole? An astronomer explains the thrilling hunt

Could a telescope see the beginning of time? An astronomer explains