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Cloud shadow on nearby clouds
Like all objects illuminated by sunlight, clouds cast a shadow.
March 13, 2017
Moon and Jupiter March 13 and 14
Jupiter and the moon will appear as nighttime's two brightest lights. They'll be close as seen from around the world.
March 13, 2017
When galaxies collide, black holes eat
When our Milky Way galaxy and neighboring Andromeda galaxy collide, supermassive black holes will have a feast!
March 12, 2017
Cassini shows strange Saturn moon Pan
Wonderful Cassini spacecraft - now in its final year orbiting Saturn - shows us a tiny, walnut-shaped shepherding moon.
March 12, 2017
Full-looking moon edges toward Jupiter
On March 12, 2017, look east as darkness falls to see a brilliant, full-looking moon. Bright Jupiter will rise shortly after the moon, by early to mid-evening.
March 12, 2017
Vibrant sundog
A sundog - a piece of a larger halo around the sun or moon - is caused by tiny ice crystals in the upper air.
March 11, 2017
Last full moon of season this weekend
March 2017 full moon is the 3rd of 3 full moons between the December solstice and March equinox. Harbinger of spring for Northern Hemisphere. Southern Hemisphere's Harvest Moon.
March 11, 2017
Comet Encke nearest sun March 10
Faithful Comet Encke is one of the shortest-period comets known. Its frequent returns near the sun helped reveal the true nature of comets.
March 10, 2017
Sliding stone, Death Valley
Here's a beautiful image of a sliding (or sailing or slithering) stone at Death Valley's famous Racetrack Playa. Cat Connor caught it on Christmas Day 2014.
March 10, 2017
Most US wildfires ignited by people
A study reports that 84% of U.S. wildfires between 1992 and 2012 were started by things like discarded cigarettes, unattended campfires, and arson.
March 9, 2017
