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Deep-Sky Objects

Explore the constellation Cassiopeia

The star Lambda Herculis

Where is the solar system heading?

Does Planet Nine exist?

Telescopes and Equipment

Could the Seestar S50 be your first imaging telescope?

Human Spaceflight

How Artemis will land humans on the Moon

Mars above the Kennedy Space Center

January 2025: What’s in the Southern Hemisphere sky this month?

Mars occulted by the Moon in December 2022

January 2025: What’s in the sky this month? The Moon occults Mars and the Pleiades, plus Mars reaches opposition

Artist's illustration of an asteroid belt around a young star

Robotic Spaceflight, Solar System

How do spacecraft avoid collisions in the asteroid belt?

Image of LEM (Snoopy) on Apollo 10

Human Spaceflight

What happened to the jettisoned Apollo lunar modules?

The Red Planet lights up a famous star cluster this month

Deep-Sky Objects, Observing

The best deep-sky targets in Taurus

Astronomy magazine Sky Guide 2025 cover

A look ahead to the sky next year: Sky Guide 2025