Geomagnetic Storm Watch issued after strong flare erupts from Sun
Aurora lights are possible in some parts of the U.S. on Monday.
Volcanic ash from Mexican volcano spotted over Florida
Popocatépetl is Mexico’s most active volcano and has been erupting for decades about 45 miles southeast of Mexico City.
Famous Alaska volcano sees seismic unrest after more than 30-year slumber
Several small earthquakes have been detected around Mt. Spurr this past week, prompting the Alaska Volcano Observatory to raise the volcano's alert level to "yellow" from the base green.
NASA astronaut released from hospital after 'medical issue' during splashdown
The SpaceX Dragon crew members completed a 235-day mission, 232 days of which were spent aboard the International Space Station conducting scientific research.
NASA Crew-8 mission: Astronaut suffers 'medical issue' after splashdown off Florida coast
Crew-8 astronaut suffers "medical event" shortly after splashdown down on Earth off Florida's coast.
NASA SpaceX Crew-8: 1 astronaut remains in hospital after ‘medical issue’
One of the SpaceX Crew-8 astronauts remains in stable condition at the hospital but no additional information was released to protect their medical privacy, NASA said.
Time is running out to see Comet Tsuchinshan-ATLAS before it disappears for possibly forever
The comet made its first documented pass by Earth this month and is likely to disappear from our night sky for 80,000 years -- that is, if it survives its voyage around the solar system.
Trio of meteor showers to light up night sky in November
The Leonids and Southern and Northern Taurids meteor showers each reach their peaks sometime throughout November.
Microbial life may exist in Martian frozen water pools, study finds
Although evidence of life on Mars hasn’t yet been discovered during any of NASA's robotic missions, scientists believe it could be a different story in small pools of water under the surface.
Orionid meteor shower peaks this weekend: When and where to look up
Skygazers in both the Northern and Southern Hemispheres will be able to see the Orionids, weather permitting.
Photos: Polish zoo celebrates birth of critically endangered Sumatran tigers
A Polish zoo is celebrating the birth of four bright-eyed Sumatran tiger cubs in what’s being hailed as “a breeding success on a global scale."
Photos: Hunter's Moon shines brightest Thursday night in Supermoon spectacular
A Supermoon is gracing our skies on Thursday night, and it's going to be a showstopper. The Hunter's Moon, the largest full moon of the year, will shine brightest after sunset.
NASA seeks life on Jupiter's moon Europa
Space UpClose Founder Ken Kremer joins LiveNOW's Austin Westfall to discuss NASA's mission to seek life on Jupiter's moon known as Europa.
Rare comet lights up the sky, won't return for 80,000 years
A rare comet that won’t be seen for another 80,000 years is visible in the night sky through part of October.
Watch: Bear caught enjoying 'spa day' in California backyard pool
A video recorded in San Bernardino County captures a bear enjoying a "spa day" by taking a dip in a backyard pool.
Launch of NASA's Europa Clipper mission
SpaceX has launched NASA's Europa mission headed to Jupiter's moon Europa, launching on a Heavy Falcon rocket.
Hunter’s Moon rising this week will be brightest Supermoon of the year
Look up this week - the moon is set to appear full most nights. Here's why.
SpaceX Starship launch: Mechanical arms catch Super Heavy rocket booster
SpaceX’s Starship rocket completed its boldest test flight yet with the help of “chopsticks," the monstrous metal arms that caught the rocket booster back at the launch pad.
Most anticipated comet of the year makes closest approach to Earth this weekend
Comet Tsuchinshan-Atlas made its closest pass to Earth this weekend, but weather permitting, it should be visible to the naked eye until the end of October. Here's what to know.
Watch magical moment man proposes under dreamy purple aurora
The geomagnetic storm this week helped make the aurora incredibly vibrant, and brought Northern Light displays to much of the northern U.S.