The Cygnus NG-24 resupply mission heads to the ISS, while SpaceX and Chinese launch providers round out a busy week.

For a long time, it was thought that this [technique] required telescopes in space,” says John Mather, the Nobel ...

On average, a planetary nebula should remain visible for some 25,000 years before its shell of gas becomes invisible.

Follow along for live updates as Artemis 2 makes its closest approach to the Moon.

Our satellite is lining up to slide south of the bright red giant star Antares; catch the pair this morning in the predawn sky.

The countdown has begun. The crew is ready. And barring any last-minute hiccups, four astronauts on Wednesday will begin a journey that sends them farther from Earth than any human has gone before.

Exciting planetary action takes place this month. Venus and Uranus vie for attention and lie close to each other in late April. Jupiter offers a lot to observe through a telescope, particularly events ...

NASA's Artemis 2 takes center stage this week as four astronauts prepare to become the first humans to travel to the Moon since 1972. SpaceX continues its Starlink cadence, while Russia's new Soyuz 5 ...

Before wrapping up their first flight day, the crew of Artemis 2 pulled off another feat of NASA in-flight troubleshooting: fixing their broken toilet. It might not rank as NASA’s no. 1 triumph, or ...

The months-long drama over NASA’s fiscal year 2026 budget has entered a critical new phase, with a looming government shutdown forcing a high-stakes confrontation over the agency’s future. The central ...

NASA’s Suomi NPP satellite captured this composite image of southern Africa and the surrounding oceans on April 9, 2015. As sea levels in these oceans rise due to climate change, Earth’s rotation ...

In a study published today in Science, researchers say they have solved a climate enigma — the inexplicable surge in global temperature in 2023, rising faster than climate models predicted. By ...