211,992 subscribers and counting ...
Three planets – Jupiter, Mars and Saturn – light up the evening sky all month long. Mercury is east before sunrise. Great month for planet-watching!
Find the famous Summer Triangle asterism ascending in the east on June evenings. It’s a large star pattern made of 3 bright stars in 3 separate constellations.
Pretty much everything you want to know about the moon in 2016 – including phases, cycles, eclipses and supermoons – from world-renowned astronomer Fred Espenak.
Summertime star parties! We’ve added many new events to this list of astronomical events throughout the U.S. and Canada. Find one near you, join in and have fun.
The May 21 Blue Moon carries that name because it’s the 3rd of 4 full moons in a season. But can a season have just 2 full moons?
For both the Northern and Southern Hemispheres, full moons have names corresponding to calendar months or seasons of the year.
We’re beginning to get questions about that red “star” in the east each evening. It’s Mars! We’ll pass between Mars and the sun this weekend.
The May 21 full moon is a seasonal Blue Moon – an older definition of the term. Watch for it this weekend, near brilliant Mars.
Video of this year’s oppositions of Mars and Saturn, in front of the constellations Libra and Scorpius. Notice Mars appearing larger around its May 22 opposition!
Saturn isn’t as bright as Mars, but it’s near Mars on the sky’s dome. It’ll soon be at its best for the year. Learn how to identify Saturn for the rest of 2016.
Known asteroids near Earth today