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Sun in zodiac constellations, 2018
Sun entry dates into zodiac constellations, using boundaries for constellations set by the International Astronomical Union in the 1930s.
January 12, 2018
Lengths of lunar months in 2017
Longest lunar month of 21st century (2001 to 2100) starts with December 18 new moon. It's also the farthest new moon of the year. Coincidence?
December 15, 2017
Sirius in many colors
When you see the sky's brightest star - Sirius - low in the sky, you're seeing it shine through an extra thickness of Earth's atmosphere. At such times, its colorful flashing might surprise you.
December 15, 2017
How to see rock-comet 3200 Phaethon
You can't see 3200 Phaethon - parent of the Geminid meteor shower and a strange asteroid-comet hybrid - with the eye alone. But backyard telescopes can pick it up. Charts and more here.
December 13, 2017
Say farewell to Venus
Did you see the conjunction of Venus and Jupiter before sunup around November 13? Since then, Jupiter has been climbing away from the sunrise, while Venus has been falling toward it.
November 26, 2017
Don’t miss Jupiter and Venus at dawn!
Spectacular Venus-Jupiter conjunction on Monday! These are the 2 brightest planets, and they'll be less than a moon-width apart. If you do miss them on Monday, keep watching. The moon is about to sweep past them.
November 12, 2017
See it! Full Hunter’s Moon
This weekend's Hunter's Moon, as captured by EarthSky friends around the world. Thank you to all who submitted photos!
November 4, 2017
International Observe the Moon Night is this week
International Observe the Moon Night is a global, public event coming up on October 16, 2021. Here's how you can participate online or in person.
October 25, 2017
See it! Orionid meteors this weekend
This weekend's Orionid meteor shower didn't disappoint. EarthSky community photos, here.
October 22, 2017
Young moon, refracted by atmosphere
Wonderful timelapse from Mike Cohea showing the October 20 young moon - only 1.3% illuminated - setting over Newport, Rhode Island, being refracted by Earth's atmosphere.
October 22, 2017
