Artemis 2 and 3 moon missions delayed, NASA says

On December 5, 2024, NASA announced a further delay to the Artemis 2 and 3 missions. Artemis 2 is now scheduled for no earlier than April 2026. More here.

Proba-3: A sun-observing telescope made from 2 satellites

ESA is launching an ambitious spacecraft to study the sun's atmosphere. Proba-3 comprises 2 satellites that will align to form an artificial solar eclipse.

NASA testing underwater robots to explore ocean worlds

NASA is testing prototypes for autonomous underwater robots that could one day explore our solar system's subsurface oceans.

Observers’ report: SpaceX Starship and electrophonic sounds

Observers in Puerto Rico reported hearing low-frequency sounds as the SpaceX Starship rocket flew past on November 19, 2024. Were they electrophonic sounds?

Europa Clipper en route and all systems go

Europa Clipper is on its way to explore Europa, the icy ocean moon of Jupiter. Deployment and testing of its instruments is underway and going smoothly.

Could the space station leak lead to ‘catastrophic failure’?

In 2019, the space station acquired a leak in a transfer tunnel. NASA said the space station leak could lead to a "catastrophic failure."

Who moved this Skynet satellite thousands of miles? And why?

An old UK Skynet satellite should still be over East Africa. But instead it's now over the Pacific Ocean near western South America. Who moved it and why?

LIVE MONDAY: A Fermi Paradox solution with Alan Stern

Join us at 12:15 CST (18:15 UTC) on Monday, November 11, when former NASA chief Alan Stern will be discussing the Fermi Paradox. Where are all the aliens?

LIVE: SpaceX Starship Test Flight No. 5 Watch Party!

Starship is the world’s most powerful rocket. Want to see it take to the sky? Join our watch party at 7 a.m. CT (12:00 UTC) on Sunday, October 13.

LIVE MONDAY: SpaceX and Space Race 2.0 with Eric Berger

Join EarthSky's Dave Adalian LIVE at 12:15 p.m. central (17:15 UTC) on September 30. He'll be chatting with Eric Berger, senior space editor at Ars Technica.