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.

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!

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.

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.

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.

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.

‘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.

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.

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.

Gaia spots over 350 asteroids with possible moons

The Gaia mission has revealed hundreds of asteroids with possible moons. The info comes from precise measurements of orbits of more than 150,000 asteroids.