EarthSky

View larger. | In this image from NASA’s Galileo spacecraft – captured in 1997 – an active volcano erupts on the limb, or edge, of Jupiter’s moon Io. If it’s

Artist’s concept showing a 3-billion-year-old dead star, known as a white dwarf, accreting material from the remnants of its former planetary system. Gravitational instabilities caused a surviving planet to spiral

An artist’s impression of the V883 Ori planet-forming disk, along with some early comets. New results from the ALMA radio telescope revealed ancient water in the protoplanetary disk around its

The European Space Agency’s Mars Express orbiter took this stunning view of the ice-filled Korolev Crater on Mars in 2018. New research shows that microbes on Mars – either ancient

Mysterious gullies on Mars appear to have been dug, but by whom or what? Video via Faculty of Geosciences Utrecht University. Gullies are common on Mars. Flowing water likely created

This collage shows NASA/ESA Hubble Space Telescope images of 6 different galaxy clusters, with dark matter colored in blue. The dark matter in these images was only detected through its

The Cassini spacecraft caught the 6th planet from the sun and its rings like never before. In this image, Saturn’s rings are gloriously backlit with the sun blocked by the

Artist’s schematic concept of the Wolf 1130ABC system. It consists of the red dwarf star Wolf 1130A (left), its close and compact white dwarf companion Wolf 1130B (middle) and the

View larger. | Artist’s concept of what an ancient ocean on Mars might have looked like. A new study shows evidence for rivers that once emptied into the ocean, creating

This image, taken by NASA’s Spitzer Space Telescope, shows a portion of molecular cloud NGC 6334, popularly known as the Cat’s Paw nebula, around 5,500 light-years away. The insets show