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Editors of EarthSky

See Mira the Wonderful waking up!

Catch elusive wonderful Mira, a famous variable star in the constellation Cetus, at its maximum brightness in February or March 2026.

Capella is one of the sky’s brightest stars

The 6th-brightest star in the night sky, Capella, in the Northern Hemisphere constellation Auriga the Charioteer, is also a point of the Winter Hexagon.

Cassiopeia and the Big Dipper in January skies

Watch the celestial clock and its 2 great big hour hands - Cassiopeia and the Big Dipper - as they swing around the North Star each and every night!

Venus superior conjunction (beyond sun) on January 6

The moment of the Venus superior conjunction - when it passes most nearly behind the sun as viewed from Earth - occurs today, January 6, 2026.

January birthstone: The colorful garnet

Garnets, the beautiful January birthstone, are often thought to be red gemstones. But they also come in yellow, green, orange, brown and black.

Why no retrograde motion for Mars in 2026?

Mars won't have any retrograde - or westward - motion in 2026. What is retrograde motion? An explanation, and bizarre examples on other worlds, here.

How to translate UTC to your local time zone

The Earth has about 24 time zones. Because these differ widely, science uses Universal Time, or UTC. Learn how to translate UTC to your local time zone.

Yarkovsky effect: Pushing asteroids with sunlight

The Yarkovsky effect is a minuscule push on a small body in space, imparted by nothing more than sunlight. It can change the direction of asteroids.

Best stargazing of 2026: Top events not to miss

Here's the best stargazing of 2026! Read about the top celestial events not to miss in the coming year, and mark them on your calendar.

Earthshine is a lovely glow on the unlit portion of the moon

Earthshine - the dim glow on the darkened portion of a crescent moon - is light from Earth cast on the night side of the moon. Watch for it around the new moon.

2026 Donation Campaign

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