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Curiosity rover reaches ancient ridge of mud and boulders
After 3 attempts, NASA's Curiosity rover has finally reached a large ridge composed of ancient mud and rocks. The ridge preserves a record of Mars' wet past.
October 1, 2023
Sun activity archive for October 2023
Sun activity archive for October 2023. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
October 1, 2023
Sun activity archive for September 2023
Sun activity archive for September 2023. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
September 30, 2023
Astronomers have noctalgia (sky grief), or sadness at the loss of dark skies
Astronomers are using a new word to express their grief over the loss of dark skies: noctalgia. Learn more about sky grief here.
September 29, 2023
A Dyson sphere harvests the energy of stars
A Dyson sphere is a megastructure that could theoretically harvest all the energy of a star and supply an advanced alien civilization.
September 29, 2023
Sycamore Gap tree in the U.K., remembered in images
Sycamore Gap tree in Northumberland National Park was felled overnight on September 27-28, 2023. Here are a few images of the tree flooding social media.
September 28, 2023
Guy Ottewell’s Astronomical Calendar 2024 is here
The popular and information Astronomical Calendar for 2024 by Guy Ottewell is available. It comes in either electronic or printed form. Learn more here.
September 28, 2023
Space is hard on the human body. Here’s what we’re learning
Space is hard on the human body and mind. Scientists are working to find ways to improve the lives and health of astronauts in space and back at home.
September 27, 2023
Caddisfly larvae are tiny rock masons. One built this case
A longtime contributor to EarthSky Community Photos, Sheryl R. Garrison, captured this cool image of a rock casing built by a caddisfly. Read Sheryl's story here.
September 26, 2023
SpaceX Starlink launches for September
Find the past and upcoming September 2023 launches for SpaceX's Starlink satellites here. Also, learn more about the Starlink constellation of satellites.
September 25, 2023
