Astronomy Staff, Author at Astronomy.com | Page 15 of 277

Web Extra: Sky Guide 2021

Ask Astro: Why does the Moon disappear during New Moon?

Cosmology, Galaxies

Ask Astro: If dark matter is invisible, then how do we detect it?

Photo Contest: Lost in the Abyss

Observing, Telescopes and Equipment

Gift Ideas for Astronomy Lovers and Stargazers | Xmas and Holiday Gift Guide

Galaxies, Milky Way

Ask Astro: How many satellite galaxies does the Milky Way have?

Telescopes and Equipment

5 astronomy gifts for space lovers obsessed with black holes

Exoplanets, Planets

Ask Astro: Can planets be pear-shaped, or are they all spheres?

Exoplanets, Planets, Solar System, Stars

Ask Astro: Could Jupiter ever become a star?

Robotic Spaceflight, The Moon

How do spacecraft communicate from the farside of the Moon?

Exoplanets, Planets

How do planets get their atmospheres?

What will happen to the planets when the Sun becomes a red giant?