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.
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
JUICE mission to Jupiter to sweep past moon and Earth this week
The JUICE mission will perform the world's 1st-ever double gravity assist - a flyby of the moon and Earth - on August 19 and 20, 2024.
August 18, 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
Does a supermoon have a super effect on us?
The extra pull of gravity from a supermoon creates higher-than-usual tides. But the moon doesn't pull a human body as strongly as an ocean.
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
