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ALCon 2016 is the national amateur astronomy convention, held this year from August 10-13 in Washington, D.C. Registration is now live!
It’s a hallmark in Jupiter’s appearance in our sky. At eastern quadrature, Jupiter is highest in the sky around the time of sunset.
Pretty much everything you want to know about the moon in 2016 – including phases, cycles, eclipses and supermoons – from world-renowned astronomer Fred Espenak.
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.
Earth flies between Mars and sun on May 22, bringing it closer than Mars has been in over a decade. How to find and enjoy Mars during 2016’s close opposition!
Earth’s shadow, sea and land