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Black Moon on September 30?
A Black Moon is the second of two new moons in a single calendar month. Whether you have one depends on your location on the globe.
September 30, 2016
Moon and Mercury on September 29
Mercury and the moon get close on the morning of September 29! They're easiest to see from the Northern Hemisphere or southern tropics.
September 28, 2016
Moon and Mercury shortly before sunrise
September 28 is also the day of Mercury's greatest elongation, when the planet will be 18 degrees west of the sun on our sky's dome. Look shortly before sunup.
September 27, 2016
Moon and star Regulus before dawn
Everyone around the world can see the moon and Regulus these next 2 mornings. From the Northern Hemisphere, you might also see Mercury.
September 26, 2016
2016 Harvest Moon penumbral eclipse
There will be a subtle penumbral lunar eclipse of the 2016 Harvest Moon, visible from half of Earth, unfortunately not North America. Details here.
September 15, 2016
September 16 full moon a supermoon?
Start watching for the waxing moon. The upcoming Harvest Moon is an especially big and bright one, but is it a supermoon? That depends on your definition.
September 14, 2016
Smallest Martian phase on September 13
Did you know Mars shows phases as seen from Earth? As darkness falls tonight, the waxing gibbous moon simulates Mars' smallest phase of 2016.
September 13, 2016
Moon, Saturn and Mars on September 7
Watch for them tonight, and also for Antares, a bright star. Then note the moon’s change of position relative to these objects over the next several days.
September 7, 2016
Moon and Spica on September 4
You can use tonight's waxing crescent moon to find the dazzling planet Venus at dusk and the star Spica at nightfall.
September 4, 2016
