Green comet sighting: Here's when to see this celestial view unlikely to return for millions of years

This celestial sighting is a bit like space-speed dating. Astronomers only just learned of Comet C/2022 E3's existence, and it will be gone before we know it. Learn how it was discovered and why a naked-eye comet is rare.

SpaceX in final preparation for Starship orbital test flight from Texas

After a series of high-altitude tests and landing attempts with Starship prototypes, Elon Musk's company SpaceX plans to conduct an orbital test flight as soon as February or March.

Moon will eclipse Mars next week; here's how and when to see it

It’s not every day the moon moves in front of a bright planet, but the likely once-in-a-lifetime event for some parts of the U.S. is happening soon.

NASA: Asteroid will miss but come close to Earth

NASA said Wednesday that this newly discovered asteroid will zoom 2,200 miles above the southern tip of South America.

NASA announces plan to test nuclear rocket engine for possible Mars mission

NASA says they are testing the rocket engine with a plan to have an in-space demonstration by 2027. This technology could help astronauts travel to and from planets faster.

First Native American woman in space steps out on spacewalk

Nicole Mann, a Marine colonel and test pilot, rocketed into orbit last fall with SpaceX, becoming the first Native American woman in space. She is a member of the Wailacki of the Round Valley Indian Tribes in Northern California.

Flashes of light may help scientists predict when solar flares may explode from the sun

Researchers used data collected from NASA’s Solar Dynamics Observatory to identify small signals of the sun’s atmosphere that will help to identify which regions on the sun were more likely to produce solar flares.

Russia to replace crew capsule at space station after coolant leak

Russian space corporation Roscosmos said Wednesday that it will launch a new spacecraft to take some of the International Space Station's crew back to Earth after their capsule was damaged and leaked coolant.

Bright green comet may become visible to naked eye later this month

C/2022 E3 (ZTF) hasn’t come so close to Earth since the last ice age, experts say. Here’s how you may be able to see it later this month.

Old NASA satellite falls harmlessly from sky off Alaska coast

After almost 40 years circling Earth, a retired NASA science satellite plunged harmlessly through the atmosphere off the coast of Alaska, NASA reported Monday.

A look back at 2022’s most pivotal moments of space exploration

This year saw dozens of rocket launches and space science milestones that will help us better understand Earth and our universe.

Look up: See all 7 planets in the sky through the end of the year

For the most part, all seven planets can be viewed in the dusk sky with the naked eye, but you might want to grab your binoculars just in case.

Apollo 8’s biblical Christmas Eve message: 'God bless all of you – all of you on the good Earth'

In 1968, the crew of Apollo 8 was told they’d have the largest audience in history as they headed for the moon on Christmas Eve. But what should they say to the conflicted planet they’d left behind?

'Buried treasure': James Webb telescope’s newest images show star at birth

‘It's like finding buried treasure,’ said scientists analyzing new images from the James Webb Space Telescope through different filters.

Pentagon has received 'several hundred' new UFO sighting reports

A new Pentagon office set up to track reports of unidentified flying objects has received “several hundreds” of new reports, but no evidence so far of alien life.