Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
What etched these strange gullies on Mars into the sand?
Researchers investigated unusual gullies on Mars that are deeply etched into sand dunes. Blocks of sublimating CO2 ice could create the unearthly features.
October 22, 2025
Proxima Centauri, the closest star to our sun
Proxima Centauri is the nearest star to our sun at 4.22 light-years away. It's home to at least 3 planets and has massive solar flares.
October 22, 2025
New comet C/2025 R2 (SWAN) is up after sunset
New comet C/2025 R2 (SWAN) is still shining at 6th magnitude, meaning it's within the limit for viewing with the unaided eye. But binoculars will show it better!
October 22, 2025
Here’s where popular witch icons originated
Witch icons like black hats, cauldrons, broomsticks and black cats stem from medieval fears and still haunt Halloween and pop culture today.
October 22, 2025
Dark matter might leave a colorful ‘fingerprint’ on light
A new study says light passing through dark matter could pick up a tell-tale red or blue tint. It could help scientists distinguish between dark matter models.
October 21, 2025
Spooky ghost lights: Believe them if you dare
Ghost lights are strange lights seen over swamps or bogs. Here are some popular places known for ghost lights. Believe in them ... if you dare!
October 21, 2025
Kiwi: The bird that can’t fly and walks at night
The kiwi is probably the bird that least resembles a bird: it has tiny wings, doesn’t fly and looks like it has hair instead of feathers. Read more about it.
October 20, 2025
Saturn’s rings are weird and wonderful: 10 facts here
Saturn's rings are a glorious highlight of our solar system. But how long have they existed? And what will happen to them? Find out all that and more.
October 19, 2025
Phosphine on brown dwarf is 1st found in surprise discovery
Astronomers have made a surprising discovery of phosphine on brown dwarf Wolf 1130C. It had been predicted but not seen in brown dwarf atmospheres until now.
October 19, 2025
Comet Halley is the parent of 2 meteor showers
The famous comet Halley spawns both the October Orionid meteor shower and the May Eta Aquariid meteor shower. It'll return to the inner solar system in 2061.
October 17, 2025
