Striking contrail shadow image from the magical sunset skies of northern New Mexico.

If they’re not up before your bedtime, watch this celestial threesome – the moon, Antares and Saturn – in the west before morning dawn.

New data on the massive molten lake on Jupiter's moon Io - most volcanically active world in our solar system - suggest 2 lava waves per day, slowly sweeping west to east.

We can't observe brain activity of extinct human species. But we can observe modern brains doing things that our distant ancestors did for clues to how their brains worked.

"Have you ever woken up from a dream and the view was still there?"

This article from NASA's Center for Near-Earth Object Studies provides fresh details on the closest approach by a large asteroid since 2004 ... and shows you how science works.

The May 9 moon might look full to you, but full moon comes on May 10 at 21:42 UTC.

Noctilucent clouds - aka night-shining clouds - can be seen at high latitudes in summer, typically beginning for northern latitudes in late May. French photographer Adrien Mauduit in Denmark assembled his best 2016 photos into a wondrous video.

They were the brightest objects nearly all night Sunday night, as seen from around the world. Here are a few photos from the EarthSky community. Thanks to all who submitted!

With a final observation of remote galaxy cluster Abell 370, the Hubble Space Telescope's mind-stretching Frontier Fields program came to an end.