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March 28 very young moon
It's rare to see a moon less than 24 hours old, that is, 24 hours past the new phase. But North America had a shot at a younger moon on the night of March 28.
March 29, 2017
Moon, Mercury, Mars on March 29
It's a very slim crescent moon you'll find in the west - shortly after sunset - Wednesday evening. Mercury is exceedingly near the sunset glare. Mars is higher up.
March 29, 2017
Watch a full rotation of the moon
Wonderful video from the Lunar Reconnaissance Orbiter, a NASA spacecraft in a polar orbit around the moon since 2009. The moon as you've never seen it!
March 28, 2017
Orion from the Southern Hemisphere
See the 3 stars of Orion's Belt in the upper right of this photo? The large, reddish cloud-like region on the lower left is the Gum Nebula.
March 28, 2017
Another Planet 9 search! You can help
This one will use images of the sky visible from Earth's Southern Hemisphere. You can help from anyplace on the globe. The search is for a 9th major planet in our system, nicknamed Planet 9.
March 27, 2017
Snow geese
Marcia White Bower captured migrating snow geese in central New York on March 19.
March 27, 2017
Super halos around very young galaxies
Astronomers directly observed a pair of Milky-Way-like galaxies, seen when the universe was 8% of its current age. They were excited to find the young galaxies surrounded by huge halos.
March 26, 2017
So long, last North American ice sheet
The last remnant of a once-enormous ice sheet will be gone in about 300 years, according to a new study. Scientists say warming temperatures are the reason.
March 26, 2017
Planets Mercury and Uranus at dusk
Innermost Mercury - and distant Uranus - are low in the western sky after sunset. Start looking for them as soon as your sky begins to darken.
March 26, 2017
Colors of scintillating Venus
Venus reaches inferior conjunction today, officially leaving the evening sky. It has been low in the sky, where Earth's atmosphere has caused Venus to scintillate, or twinkle, in many colors.
March 25, 2017
