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.
Can 2 planets share an orbit? New image points to yes
Can 2 planets share an orbit? Astronomers have long believed they could, and a new image is finally providing photographic evidence of the possibility.
July 23, 2023
Boulders from asteroid Dimorphos, after spacecraft impact
The Hubble telescope caught these boulders from asteroid Dimorphos, following the impact by NASA's DART mission for "planetary defense."
July 21, 2023
Spiral arms around a star, made by a giant planet
Spiral arms are common in galaxies, but they can also form in disks of dust and gas around young stars. A new discovery shows how giant planets create them.
July 20, 2023
Ocean worlds around red dwarfs … common?
A new study says that the chances of ocean worlds - rocky planets with liquid water - orbiting red dwarf stars is much greater than previously thought.
July 19, 2023
The Day the Earth Smiled 10 years ago today
Today is the 10th anniversary of The Day the Earth Smiled, the 3rd-ever image of Earth from the outer solar system, taken by the great Cassini spacecraft.
July 19, 2023
Ancient moon volcano revealed in far side hot spot
Scientists discovered an ancient moon volcano after detecting a hot spot - an underground mass of radioactive granite - on the far side.
July 18, 2023
Airplane-sized asteroid found 2 days after brush by Earth
An airplane-sized asteroid came within 1/4 the moon's distance to Earth on July 13, 2023. However, scientists didn't detect the asteroid until two days later.
July 16, 2023
1st dark stars?! Maybe, say astrophysicists
Scientists say they've found the 1st dark stars - brighter than our sun - powered by dark matter particles that collide and annihilate themselves.
July 16, 2023
Top 10 cool things about stars that you probably didn’t know
Here's a collection of 10 cool things about stars that you probably didn't know. Big stars, green stars, black holes, stars by the millions, and more!
July 16, 2023
How nuclear fusion works to let stars shine
Nuclear fusion powers our sun and is the energy source of the stars in our night sky. Here's how nuclear fusion works to make stars shine.
July 16, 2023
