Rita Raina captured all the stars in the Winter Circle, as the moon swept through it. She said, "It wasn't easy getting them all in the frame ... but it's done!
Fossil remains of a 4-legged whale with hooves suggest that this whale could walk on land. With a robust tail and webbed fingers, it might have propelled itself through water like an otter.
Watch Mars' moons Phobos and Deimos cross the sun in a pair of solar eclipses last month, in these animations made from images from the Curiosity rover's cameras.
The disease, which eats away at the skin of amphibians, has completely wiped out 90 species and caused dramatic population declines in more than 500 more.
New findings from Cassini - which orbited Saturn from 2004 to 2017 - confirm that dust and ice from Saturn's rings accumulate on moons orbiting in the rings' vicinity.
Eleanor Imster has helped write and edit EarthSky since 1995. She was an integral part of the award-winning EarthSky radio series almost since it began until it ended in 2013. She and her husband live in Tennessee, where they enjoy guitar playing and singing. They have 2 grown sons.