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Tonight
Moon near Venus, Mars, Castor, Pollux and Beehive May 22-24
Watch for the waxing crescent moon near Venus, Castor, Pollux, Mars, and the Beehive star cluster on the evenings of May 22, 23 and 24, 2023. Beautiful!
May 21, 2023
Earth
Canadian wildfires continue to rage with a smoky central US
Canadian wildfires continue to rage, with the provinces of British Columbia, Alberta and Saskatchewan producing smoke that is pouring into the U.S.
May 21, 2023
Astronomy Essentials
Visible planets and night sky for May 2023
May's visible planets: Brilliant Venus and Mars are in the western evening sky. Morning planets are Saturn, Jupiter and Mercury.
May 21, 2023
Space
Distant volcano-covered world is the size of Earth
Astronomers say they have discovered an Earth-sized exoplanet 90 light-years away that may be a volcano-covered world, possibly as active as Jupiter's moon Io.
May 21, 2023
Earth
Blood Falls in Antarctica, what makes them red?
A recent study on Antarctica’s Blood Falls reveals the origins of its unique, bright red discharge. This might help in the search for life in our solar system.
May 21, 2023
Astronomy Essentials
Sky measurements: Degrees, arcminutes and arcseconds
What are sky measurements - or distances - in the night sky? Here's what it means for objects to be several degrees (or arcminutes or arcseconds) apart.
May 21, 2023
Today's Image
New supernova! Closest in a decade
A new supernova in M101 (the Pinwheel Galaxy) - discovered on May 19, 2023 - will brighten for a more couple days and be visible to amateurs for a few months.
May 20, 2023
Space
Evidence for ancient river on Mars in new rover images
NASA's Perseverance rover has spotted new signs of an ancient river on Mars, deeper and faster than any seen before. Curving layers of rocks provide the clues.
May 19, 2023
Earth
Joro spiders are more afraid of you (if that’s possible)
The giant Joro spiders spreading up and down the East Coast are surprisingly shy, researchers found. Although venomous, the pose no threat to humans.
May 19, 2023
Human World
Space
Help spot asteroids! The Daily Minor Planet needs you
NASA's new project, the Daily Minor Planet, is asking for you to help spot asteroids. Find out how to help here and learn more about the project.
May 19, 2023
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