Staff, Author at Astronomy.com

This view of Earth rising over the Moon's horizon was taken from the Apollo 11 spacecraft. Credit: NASA.

Human Spaceflight, Science

Why do pictures of Earth taken from the Moon show a black sky with no stars?

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?

Ask Astro: Why are small black holes more dangerous than big ones?

Observing, Upcoming Events

Join us in Tucson for Astronomy’s annual star party!

Molly Wakeling joins Astronomy magazine as Contributing Editor

Web Extra: Sky Guide 2023

Ask Astro: Can an observer ever see something fall into a black hole?

Ask Astro: How many stars are born each year in the Milky Way?

Ask Astro: What are a supermassive black hole’s jets made of?

Telescopes and Equipment

The best space gifts for astronomy lovers and stargazers | Holiday Gift Guide 2022

Exotic Objects, Milky Way

Ask Astro: Where would a telescope need to be to see the Milky Way’s black hole without any dust in the way?

Cosmology, Science

Ask Astro: If the universe is expanding, why will the Milky Way and Andromeda galaxies collide?