It resembles a fingerprint, doesn't it? But it's really a galaxy, rotating. This image is from ESA's Gaia space observatory. It shows the rotation of the Large Magellanic Cloud.
The moon swept past the very bright planet Jupiter in late April, shortly before the giant planet was at its closest and brightest for the year. Gorgeous photos from the EarthSky community, here.
Warming seawater might be the culprit, or seals might have gnawed the holes. For now, the strange circular holes in Arctic sea ice, photographed earlier this month, are mysterious.
Shell Beach is a neighborhood in the city of Pismo Beach in San Luis Obispo County, California. Photographer Mimi Ditchie caught this image on Earth Day weekend.
Enjoy this interesting and unique photo of star trails, showing the whereabouts of the celestial equator and the arc of stars around both celestial poles.