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

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

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

The four crew members are closer to Luna than to our home world, right on course, and viewing parts of the Moon never before seen by humans.

On Saturday, April 4, on the eve of Easter, as the Artemis 2 crew traversed cislunar space 180,000 miles (290,000 kilometers) from Earth, the pilot of Integrity, Victor Glover, was asked in a video ...

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 ...

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.

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 ...

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 ...

Born March 24, 1893, in Germany, Wilhelm Heinrich Walter Baade earned his Ph.D. from the University of Gottingen in 1919. He went on to a career at the Hamburg Observatory, then, in the late 1920s, ...

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 ...

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 ...