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.

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

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

Crew begins a seven-hour lunar observation as NASA returns to the moon’s neighborhood for the first time in decades.

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

The crew was overcome with emotion as they nominated the name Carroll for a crater "in a bright spot on the Moon." ...

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.

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

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

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 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 ...

As the familiar wintertime constellations begin setting earlier each evening, it’s our last chance to catch some of the deep-sky treasures they contain. The constellation Monoceros lies east of better ...