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No kidding! April Fools’ Comet
Comet 41P/Tuttle-Giacombini-Kresák will be closer to Earth on April 1 than it's been since its discovery. You need a telescope to see it, but there's an online viewing Friday night.
March 31, 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
Venus after sunset and before sunrise!
The planet Venus is now appearing in the west after sunset and in the east before sunrise. Don't believe it? Astronomer Bruce McClure reports on his observation.
March 23, 2017
March 4 moon hides Aldebaran
The occultation by the moon of Aldebaran - brightest star in Taurus the Bull - was visible from North America. Great set of photos here from the EarthSky community!
March 5, 2017
Catch Comet Encke this evening!
The comet's orbital period is short - only 3.3 years - and the orbit is relatively close to Earth. Encke's Comet is now on its 63rd known visit to our part of space.
February 27, 2017
Star brightness versus star luminosity
Some extremely large and hot stars blaze away with the luminosity of a million suns! But other stars look bright only because they're near Earth.
February 18, 2017
Green Comet 45P: Photos and video
Green Comet 45P has been in our sky for months and passed closest on February 11, 2017. It's a faint one, but intrepid astronomers have captured some wonderful images!
February 12, 2017
See it! February 10-11 lunar eclipse
A penumbral eclipse is subtle, but has a quiet beauty all its own. Thank you to all who submitted photos of the February 10-11, 2017 eclipse!
February 11, 2017
