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Astronomy

The Moon has a New Once-in-a-Century Crater

The lunar surface is more dynamic than you might think

September 18, 2026

The Crescent Nebula: A Gas Bubble Surrounding a Violently Dying Star

A light show that will get even more dramatic in time

September 16, 2026

Mercury Has Gotten Smaller Than We Thought

The first planet from the sun has been hiding its wrinkles

September 15, 2026

Did Venus Eat its Own Moon?

The mystery of why our sister planet is alone

September 14, 2026

The Moon May Have Been Created in Just Five Hours

Researchers played out the impact between Earth and the hypothetical ancient planet Theia

September 11, 2026

“Twin Spirit” Galaxies Are on a Collision Course

NGC 7253A and NGC 7253B are joining forces

September 10, 2026

An Astrophysicist’s Favorite Books on Cosmology

This reading list takes you to the stars

September 9, 2026

After an 8-Year Journey, Orbiters Are About to Give Us a Fresh Look at Mercury

But the BepiColombo twin orbiters aren’t the first spacecraft to visit our system’s smallest planet. Here’s what we’ve seen already

September 7, 2026

Many Space Missions Are Searching for Life Beyond Earth—But Are We Prepared for the Fallout If They Succeed?

Several space missions are searching for extraterrestrial life, which could come in the form of microbes