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Polaris, the North Star, has spots on its surface
Observations of Polaris, the North Star, show large bright and dark spots on its surface. It's the first glimpse of the surface of a Cepheid variable.
August 25, 2024
Dinosaur-killing asteroid came from beyond Jupiter
An international team of scientists has determined that Chicxulub dinosaur-killing asteroid was carbonaceous and originated from the deep outer solar system.
August 22, 2024
Moon and Saturn close together this week. See the images!
Did you miss the moon and Saturn close together on August 20, 2024? Here's a gallery and video full of images of the event. Enjoy!
August 22, 2024
Oceans of water on Mars deep underground?
Where did Mars' water go? A new study using data from NASA's InSight mission provides evidence for oceans of water on Mars, deep below the surface in the crust.
August 20, 2024
LIVE on Monday: Super Blue Moon
Join EarthSky team members LIVE beginning at 12:15 p.m. (17:15 UTC) on Monday, August 19, 2024 ... to talk about Monday night's Super Blue Moon.
August 19, 2024
A solitary star speeding across the Milky Way
Citizen scientists have discovered a solitary star speeding so fast that it will eventually escape the Milky Way's gravity and shoot into intergalactic space.
August 18, 2024
Asaph Hall finds Mars moon Phobos 147 years ago today
On this date in 1877, American astronomer Asaph Hall discovered Phobos, the larger of Mars' 2 moons. He discovered the other moon, Deimos, later that year.
August 17, 2024
‘Continents’ on Venus similar to those of early Earth?
A new study suggests that 'continents' on Venus, vast plateaus known as tesserae, may have formed in a very similar way to early continents on Earth.
August 14, 2024
LIVE on Monday: What’s Phil thinking of NOW? GAIA
What's Phil thinking? Join Phil Plait, The Bad Astronomer, beginning at 12:15 p.m. central (17:15 UTC) on Monday, August 12 ... to hear him talk about GAIA.
August 12, 2024
Did meteorites create the moon’s atmosphere?
Did meteorites create the moon's atmosphere? A new study of soil samples - collected by Apollo astronauts in the 1970s - says yes.
August 12, 2024
