Measuring universe expansion reveals mystery

Is something unpredicted going on in the depths of space?

Update on S2, the star plunging past the Milky Way’s black hole

Astronomers report no companion found for S2, the star orbiting near our Milky Way's central black hole. It's an "all-clear” for an exciting test of Einstein’s Theory of General Relativity.

Day meets night on Jupiter

The Juno spacecraft captured this image during its 11th close flyby of the planet. It shows swirling cloud formations around Jupiter's south pole.

Send your name to the sun

NASA's Parker Solar Probe, launching this summer, will travel closer to the sun than any spacecraft yet - and you can send your name along for the ride. Hear about it from William Shatner.

See asteroid 2017 VR12 as it swept past

Asteroid 2017 VR12 passed at 3.76 times the moon's distance on March 7. Here are images and video of its sweep past Earth.

Views of home

Intriguing and inspiring perspectives of our home planet from spacecraft cameras looking back at Earth.

A signal from the 1st stars

It’s potentially one of the most exciting astronomical discoveries of the decade. Astronomers have detected a signal from the 1st stars to form in the universe.

This asteroid will pass closer than the moon on Friday

And you can watch the passage of near-Earth asteroid 2018 DV1, live, on March 2.

See Mars moon Phobos drift in front of Saturn

Expand to full size to see this video from ESA’s Mars Express spacecraft, which caught a close-up view of the little Mars moon Phobos, moving in front of distant Saturn.

Astronomers detect earliest hydrogen

They used a radio telescope to peer back to a time only 180 million years after Big Bang - when the 1st stars were turning on - to observe the earliest-yet signals of hydrogen gas.

EarthSky Newsletter

Nearly half a million daily subscribers love our newsletter. What are you waiting for? Sign up today!

Join now to receive free daily science news delivered straight to your email.