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.

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

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.

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.

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.

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 ...

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 ...

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 ...