Dead satellite enters atmosphere over Pacific Ocean

A dead satellite - ESA’s ERS-2 satellite - re-entered Earth's atmosphere today. ESA said: The entry was uncontrolled or "natural".

Icy Eris and Makemake have warm hearts

NASA's Webb space telescope shows that icy dwarf planets Eris and Makemake have been warm and geologically active on the inside recently, and may still be.

Meet Pollux: The brighter twin star of Gemini

Pollux, the brightest star in the constellation Gemini, blazes in a golden light next to its bluish-white heavenly twin, Castor.

Castor is 6 stars in one

The bright blue-white star Castor, in the constellation Gemini, appears to our eyes as a single star. But it’s really a family of 6 stars.

Record quasar is most luminous object in the universe

Record quasar J0529-4351 is the current record holder for most luminous object in the universe, fastest-growing black hole and largest accretion disk.

John Glenn 1st American in orbit 62 years ago today

John Glenn became the first American to orbit Earth on February 20, 1962, 62 years ago today. His space capsule was called Friendship 7.

Euclid space telescope begins dark universe survey

On February 14, 2024, Euclid began its mission of surveying the dark universe. The space telescope will observe about 1/3 of the sky.

Are we poised to understand fast radio bursts?

Will we soon understand fast radio bursts? Two NASA X-ray telescopes recently observed one shortly before and after it occurred. Magnetars could be the bursts' source.

Are Chariklo’s rings shaped by a tiny unseen moon?

A new study suggests a tiny as-yet unseen moon shapes Centaur Chariklo's rings. The process is similar to the shepherd moons in Saturn's rings.

We heart the Earth and sky! PHOTOS

This Valentine’s Day, we find so much to love in the many heart shapes right here on Earth or all the way to the deepest reaches of the sky.