EarthSky

Meet a spreading earthmoss known as Physcomitrella patens. It’s frequently used as a model organism for studies on plant evolution, development, and physiology. In this image, a reddish-brown sporophyte sits

Unusually long gamma-ray bursts require more exotic origins than typical gamma-ray bursts. This animation illustrates one proposed explanation. It shows a black hole eating a stellar-mass star. As the black

View larger. | Artist’s concept of TOI-270 d, a sub-Neptune world about 73 light-years away. New analysis of data from the James Webb Space Telescope suggests there might be an

View larger. | Artist’s concept of the ancient lake in Gale crater on Mars and the river that flowed into it. Evidence from thinly layered sediments in Gale crater, studied

These are dust devils on Mars, spotted by the Perseverance rover on September 6, 2025. Audio recordings from this rover have provided the 1st direct evidence that dust devils and

Mysterious blasts of radio waves from across the universe called fast radio bursts help astronomers catalog the whereabouts of normal matter in our universe. Image via ESO/ M. Kornmesser/ The

The 2026 EarthSky lunar calendar makes a great gift. Get yours today! NIST scientists have calculated that clocks on Mars will tick an average of 477 millionths of a second

Sgr A* marks the supermassive black hole at the center of our Milky Way galaxy. The green outlines are locations of star clusters. S2 is one such star cluster. Meanwhile,

View at EarthSky Community Photos. | Steven Bellavia captured Mercury’s sodium tail on the morning of December 3, 2025, from Surry, Virginia. Steven wrote: “A 24-million-km-long plume of gas is

NASA’s Nancy Grace Roman Space Telescope is now fully assembled! The space telescope is currently at the Goddard Space Flight Center in Greenbelt, Maryland. It will now undergo testing before