Earth’s ice ages shaped by tiny tugs from Mars

Computer simulations show the presence of Mars affects the cycles that cause Earth's ice ages. Without Mars, those cycles vanish.

Strange shock wave around dead star surprises astronomers

Astronomers have spotted a beautiful shock wave around a dead star 730 light-years away. And according to all known mechanisms, this shock wave shouldn't exist.

New research says icy lakes on Mars lasted for decades

The ancient lake in Gale crater - and other icy lakes on Mars - could have been liquid below the surface for decades thanks to seasonal surface ice.

Fast-spinning asteroid 2025 MN45 rewrites rotation record

2025 MN45 - a newly discovered fast-spinning asteroid - is the fastest-rotating object of its size ever discovered. It rotates once every 1.88 minutes.

Earliest, hottest galaxy cluster gas could upend models

Astronomers have found the earliest, hottest galaxy cluster gas yet. This scorching gas between galaxies is hotter than expected for so early in the universe.

Potentially hazardous asteroid to pass Earth safely Monday

A potentially hazardous asteroid, 2005 UK1, will safely pass Earth on January 12, 2026. At this time it will be more than 32 times the moon's distance away.

Saturn-mass rogue planet revealed in unique new observations

Astronomers have discovered a Saturn-mass rogue planet nearly 10,000 light-years away. It's the 1st one found using both observatories on Earth and in space.

Betelgeuse’s companion star leaves detectable wake

Astronomers have detected the influence of Betelgeuse's companion star, Siwarha, on the gas around the red supergiant star.

Cloud-9 is a new type of object: a failed galaxy

Cloud-9 is the 1st example astronomers have found of a failed galaxy. Hubble found the galaxy contains no stars, but it is home to dark matter.

Supermassive black holes in all galaxies? Maybe not

A new study looked at 1,600 galaxies and found that the cores of small galaxies are less likely to be home to supermassive black holes.