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International Observe the Moon Night October 4

International Observe the Moon Night is October 4, 2025. It's a global event for celebrating the moon. Here's how you can participate online or in person.

EarthSky Voices

October 4, 2025

Exoplanets are worlds orbiting other stars

Exoplanets are worlds orbiting distant stars. Watch a video with an astronomer who studies them. Learn the history of our knowledge of exoplanets, and more.

Andy Briggs

October 1, 2025

The Big Dipper: Why can’t you see it now?

The Big Dipper is easy to recognize at most times of the year. But the Big Dipper in autumn rides low in the northern sky in the evening hours.

Deborah Byrd

September 26, 2025

How many stars can you see on a moonless night?

Have you ever wondered how many stars are visible on a given night? It all depends on how dark your sky is, what your age is, and other limiting factors.

Editors of EarthSky

September 23, 2025

Deep partial solar eclipse today. Watch live here

A deep partial solar eclipse will occur on September 21, 2025. The path sweeps across the South Pacific including New Zealand and parts of Antarctica.

Marcy Curran

September 20, 2025

Our top 10 stargazing tips for beginning astronomers

If you're new to observing the night sky, check out our top 10 stargazing tips for beginners. We'll help you explore and expand your love for astronomy.

Deborah Byrd

September 14, 2025