Cosmology | Page 6 of 24 | Astronomy.com

Rising star in astronomy: Jedidah Isler

Podcast: How particle accelerators came to be

Cosmology, Exotic Objects

Maarten Schmidt, the father of quasars, dies at age 92

This colorful image shows a closeup of a portion of the Andromeda Galaxy’s (M31) disk. The Cepheid variable star M31-V1 is indicated with an arrow.

Cosmology, Galaxies, Stars

The star that changed the cosmos: M31-V1

Most distant dark matter ever found dates back 12 billion years

Cosmology, Galaxies

Envisioning extragalactic wonders beyond our Milky Way

Ask Astro: How did the Big Bang start from the size of a pinhead?

The physics of accretion: How the universe pulled itself together

Alien Life, Cosmology

Ask Astro: If the universe is 13.8 billion years old, shouldn’t other life have existed before us?

Quantum entanglement — when the states of two particle are intertwined by the laws of quantum mechanics — has long vexed physicists. But the phenomenon may also hold the key to understanding how time emerged. Credit: J Jurik Peter/Shutterstock

The struggle to find the origins of time

Ask Astro: How far away is the cosmic microwave background?

The Planck era: Imagining our infant universe