Posts by 

Editors of EarthSky

Twilight in 1, 2, 3 stages

Twilight is that magical time between sunlight and darkness. Astronomers, the experts on nighttime, recognize three stages of twilight.

James Webb Telescope: Preparations resume for December 22 launch

An unwanted vibration in the Webb Space Telescope caused launch preparations to cease temporarily two days ago. Now they have resumed.

Moon in Gemini – near Castor and Pollux – November 21 and 22

Look for the moon in Gemini on November 21 and 22, 2021. The 2 bright stars near the moon are Castor and Pollux, the "twins."

La Palma volcano has been erupting for 2 months

The La Palma volcano - which began on September 19, 2021 - has now been erupting for 2 months. It has claimed one life and forced thousands to evacuate.

Lunar eclipse photos November 18-19, 2021

A selection of lunar eclipse photos from the EarthSky Community. Did you see it? It was a deep partial eclipse ... almost total!

Deep partial lunar eclipse November 18-19: Great for North America

A partial lunar eclipse occurs on November 19, 2021. It will reach the Americas, North Europe, eastern Asia, Australia, and the Pacific.

What’s the most distant spacecraft from Earth?

The most distant spacecraft from Earth is Voyager 1. Launched in 1977, Voyager 1 is a few billion miles farther from Earth than its sibling, Voyager 2.

Meet Hamal, an ancient equinox star

Meet Hamal, the brightest star in Aries, and learn why people sometimes refer to the March equinox point as the First Point in Aries.

Orion the Hunter on November evenings

In November, the famous constellation Orion is back in the evening sky! Its most recognizable feature is its belt of 3 medium-bright stars.

An omega moonset’s continuous change

Meiying Lee in Taipei, Taiwan captured these images - and created this video - of the omega moonset on November 10, 2021.