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Space
Could there be life in helium atmospheres on exoplanets?
Is life in helium atmospheres on exoplanets possible? A new study says that there are no barriers to life on worlds with helium-dominated atmospheres.
August 26, 2026
Space
‘Jellyfish’ on Mars: Image from Curiosity rover goes viral
A previously overlooked photo from the Curiosity rover shows an odd 'jellyfish' on Mars. Is it a real anomaly or an imaging artifact?
August 26, 2026
Earth
National parks from space: How many can you name?
Take the quiz to see how many national parks from space you can name. And don't forget to celebrate National Park Week, from August 22 to 30!
August 26, 2026
Sun
Sun news: Big chunk of sun-stuff coming to Earth
Sun news August 26, 2026: The M7 flare's CME is confirmed to be Earth-bound, expected to arrive August 28. G2 storms and auroras on the cards!
August 26, 2026
Astronomy Essentials
Tonight
Visible planets and night sky guide for August and September
Visible planets and night sky guide: Tonight, look for the bright waxing gibbous moon passing through the arrowhead shape of Capricornus the Sea-goat.
August 26, 2026
Tonight
The return of Sirius in the morning signals seasonal change
A sign of the changing season is the return of Sirius before sunup. Want to make sure you've spotted Sirius? The 3 stars in Orion's Belt point to it.
August 26, 2026
Space
How earthly microbes on the moon might survive in the shade
Microbes on the moon that hitch a ride on human astronauts could survive by using little nooks and crannies for protection from the harsh environment.
August 25, 2026
Astronomy Essentials
Deep partial lunar eclipse on August 27-28, 2026
A deep partial lunar eclipse of the full Sturgeon Moon takes place on August 27-28, 2026. Will you be able to see it? Maps and details here.
August 25, 2026
Space
Voyager 2: Our 1st and only visit to Neptune
On this day, August 25, 1989, Voyager 2 visited Neptune. To this day, no other spacecraft from Earth has returned to the faraway planet.
August 25, 2026
Human World
Space
Pluto demoted to dwarf planet 20 years ago today
Pluto is the largest of many small bodies in the outer solar system. That's partly why it was demoted from major planet to dwarf planet in 2006.
August 24, 2026
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