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Contrail shadow
Jet contrail shadows appear to be cast by a low-altitude bright light shining upwards. In fact, the light source is the sun, and the shadow is cast downward on clouds below.
January 26, 2017
Hole-punch clouds over SoCal
Hole-punch clouds result from a combination of cold temperatures, air traffic, and atmospheric instability. Conditions were ripe for making them over southern California last weekend.
January 25, 2017
Favorite photos from this weekend
The EarthSky community on Facebook outdid itself posting photos over the weekend of January 20-22, 2017. Thanks, everybody! Editors' picks here.
January 22, 2017
Waning moon in sunrise colors
Jüri Voit captured this photo Saturday morning - January 21, 2017 - in Kuusalu, Estonia.
January 22, 2017
Moon, Jupiter, Jupiter’s moons
Jupiter and its Galilean moons with Earth's moon at the last quarter phase, captured Thursday morning.
January 19, 2017
Solar system montage
A very cool composite of real images from an excellent astrophotographer.
January 19, 2017
Speed of light
Manuel Dietrich titled this photo Speed of Light. He captured it in the Black Forest of southwest Germany.
January 18, 2017
Waning Venus
Between now and late March, when Venus flies between us and the sun - thereby entering our morning sky - those with telescopes will see Venus wane, like a little waning moon.
January 15, 2017
Into the storm
Manish Mamtani was coming back from Yellowstone National Park in late 2016, when he encountered this storm on the road ahead.
January 14, 2017
