Image of the Day

NASA's Orion spacecraft parachutes down from the sky over Arizona during a launch abort test on Sept. 13.

Hurricane Maria: See the Latest Videos from Space

NOAA satellites and International Space Station cameras have been capturing imagery of the storm since it was developing in the Atlantic Ocean.

Stellar Duo's Spectacular Explosive Dance Illuminated Via 3D-Printed Model

To understand the explosive dance between two stars in a close orbit, researchers turned to a 3D model — and even 3D printed it to get a more intuitive view.

Space Lung Tissue Experiment Returns to Earth

Lung tissue samples grown on the International Space Station, which have just arrived back on Earth, could help researchers understand how space travel affects breathing.

Glowing Red Eye: Cosmic Bubble Surrounds Odd 'Carbon Star'

Gorgeous new imagery shows the enormous, glowing bubble that a strange, dying red star has blown around itself.

Halley's Comet: Facts About the Most Famous Comet

The comet's frequent recurrence has played a part in historical events for millennia.

Planet Venus Facts: A Hot, Hellish & Volcanic Planet

Venus is the brightest planet in our solar system, has a hellish atmosphere, and is covered in volcanoes. Learn more about planet Venus here.

Enhanced NASA Images Show Potential for Buried Ice Near the Martian Equator

Improved observations from NASA’s Mars Odyssey spacecraft show an abundance of hydrogen, which is a sign of potential watery deposits.

Hurricane Maria: See the Latest Videos from Space

NOAA satellites have been capturing imagery of the storm since it was developing in the Atlantic Ocean.

Fun in Zero-G: Weightless Photos from Earth and Space

See amazing, and sometimes hilarious, photos of fun in weightlessness in these zero gravity photos on airplanes and spacecraft.

Zero-G Zoo? Nope, Just an Astronaut Making Balloon Animals in Space

Have you ever seen a giraffe floating in zero-g?

Virgin Orbit Still Aims to Fly Twice a Month in 2020 Despite Test Delays

Virgin Orbit says it will perform 24 missions with its LauncherOne small-satellite booster in 2020 despite pushing initial test flights into 2018.

In Photos: Hurricane Maria Seen from Space

Hurricane Maria peaked as a massive Category 5 storm as it rolled across the Caribbean in September 2017. See photos of Hurricane Maria from space by satellites in our gallery here.

Retro Alien 'Field Guide' Profiles 'Star Trek: The Next Generation' Creatures

"Star Trek" fans will get a great nostalgia kick from a new book that covers every alien species featured in "The Next Generation" , from Acamarians to Vulcans.

Satellites Tracking Powerful Hurricane Maria From Space

A number of satellites are keeping tabs on Hurricane Maria as the dangerous storm churns its way through the Caribbean.

Watch Hurricane Maria in Action in These NASA and NOAA Gifs

Satellites operated by NASA and the National Oceanic and Atmospheric Administration are tracking Hurricane Maria from space you can see some of those observations below, shared by the agencies on social media.

Image of the Day

Before NASA's Cassini spacecraft dove into Saturn last Friday , it bade farewell to Iapetus, one of Saturn's "Pac-Man" moons. Also known as the "yin-and-yang" moon, Iapetus is bright on one side and dark on the other.

Cold World, Hot Topic: Can Microbes Survive on Mars?

Scientists are working to determine if microbes can survive on Mars — and if so, what the best habitats on the Red Planet may be.

Curiosity Rover Climbing Steep Martian Ridge

Curiosity began climbing Vera Rubin Ridge in early September. The rover's handlers want Curiosity to study the ridge's many layers all the way to the top.

Jaw-Dropping Jupiter: Juno Probe Snaps Dramatic Up-Close Views of Planet

New photos by NASA's Juno spacecraft capture the solar system's largest planet in all its complex glory.

Planet Jupiter: Facts About Its Size, Moons and Red Spot

Jupiter is the largest planet in our solar system, and is known for its many moons, its dangerous radiation belt and its iconic Great Red Spot.

Planet Saturn: Facts About Saturn's Rings, Moons & Size

Learn about the physical characteristics of Saturn and its famous rings, what we know about Saturn’s moons and Saturn’s roots in Greek mythology.

Human-Caused Climate Change Could Doom Coastal Cities, Neil Tyson Says

The United States "might not be able to recover" from climate change if extreme weather events and flooding continue to swamp the country's largest coastal cities, astrophysicist Neil deGrasse Tyson told CNN yesterday .

Arecibo Observatory Closes as Hurricane Maria Threatens Puerto Rico

The Arecibo Observatory in Puerto Rico will cease observations through Thursday and keep its visitor's center closed through Sept. 28, due to the impending arrival of Hurricane Maria.

Spectacular Saturn Images by 'Amateurs' Will Make Your Jaw Drop

These amazing images of Saturn were created by enthusiasts from the public data available from the Cassini spacecraft.

Eulogy for Cassini at Saturn

NASA’s Cassini spacecraft, which ended its mission to Saturn on Sept 15, reminded one writer about her immigrant mother.

Fossilized Cosmic Dust Found in the Iconic White Cliffs of Dover

Micrometeorite fossils embedded in the cliffs could help explain events that took place as many as 98 million years ago.

Mock Mars Crew Emerges from Dome in Hawaii After 8 Months of Isolation

After spending eight months simulating life on Mars on the slopes of Mauna Loa, Hawaii, six "astronauts" emerged from their habitat on Sunday to return to civilization.

The Moon Blocks 3 Planets, Star Today

Earth's nearest neighbor covered up Venus and the bright star Regulus in the sky this morning, and will swallow up Mars and Mercury this evening. The moon hasn't "occulted" three planets in a day since 2008.

The Asteroid Belt May Be a 'Treasure Trove' of Planetary Building Blocks

The asteroid belt may have originally started out empty, later becoming a "cosmic refugee camp" taking on leftovers of planetary formation from across the solar system, a new study finds.

In Photos: 8 Months on 'Mars' with the HI-SEAS Mission V Crew

Six "astronauts" spent eight months in the HI-SEAS mock Mars habitat to simulate life on the Red Planet. See photos from their mock Mars mission.

'Turtles' On a Really High Post: NASA's New Astronauts Get Their Nickname

What do you call a group of new astronauts who are a tad green around the collar, a bit shell-shocked at being chosen and who saw their new home submerged underwater just after they arrived at NASA? "The Turtles," of course.

Northrop Grumman to Acquire Orbital ATK

Northrop Grumman will acquire Orbital ATK in a $9.2 billion deal the companies announced Sept. 18.

Image of the Day

Saturn's moon Enceladus sets behind the planet's horizon in this image from NASA's Cassini spacecraft. This is one of the last photos Cassini took before plummeting into Saturn on Friday .

Farewell, Cassini: Gorgeous Final Photos Are a Fitting Send-Off for Saturn Probe

The Cassini spacecraft burned up in the skies of Saturn on Sept. 15, but the probe said goodbye with some stunning images.

Gemini 10: NASA's Epic 1st Double Rendezvous Mission in Photos

Gemini 10 was the eighth crewed space mission of NASA's Gemini program. Launched in 1966, the mission's purpose was to conduct rendezvous and docking tests in orbit.

'It Went Perfectly': Cassini Saturn Probe Was a Pro to the Very End

NASA's Cassini spacecraft died the way it lived — as a well-oiled, data-gathering machine.

SpaceX Dragon Cargo Craft Splashes Down in Pacific Ocean

A SpaceX Dragon cargo ship returned to Earth today after a nine-month stay at the International Space Station.

Back to Saturn? NASA Eyes Possible Return Mission as Cassini Ends

NASA's just-ended Cassini mission revealed the Saturn system to be spectacularly and surprisingly diverse, with multiple moons that may be capable of supporting life. When will NASA launch another mission to follow up on Cassini's finds?

NASA Preparing Call for Proposals for Commercial Lunar Landers

NASA is preparing to release a solicitation for the commercial transportation of payloads to the lunar surface, the latest step in the agency's efforts to help promote the development of commercial lunar landers.

After Cassini: Giant-Planet Exploration Focus Shifts to Jupiter

With NASA's Cassini spacecraft now just a blur of molecules in Saturn's cloud tops, another gas giant is rotating into the crosshairs of the planetary exploration community.

Watch Live @ 4:30am ET: SpaceX Dragon Departs the International Space Station

A SpaceX Dragon cargo spacecraft will undock from the International Space Station early Sunday morning at 4:47 a.m. EDT .

NASA Studying Less Expensive Options for Europa Lander Mission

NASA is continuing to examine various, potentially less expensive options for a mission to land on Jupiter's moon Europa even after completing a recent review, postponing a call for instruments for the spacecraft.

Meet the Time Lords: The Many Faces of Doctor Who

Clothes have always maketh the man, especially when that "man" is an enigmatic Time Lord with the power to traverse dimensions and raise himself from the dead.

As Oceans Alkalized, Life Developed Bones and Shells

A critical feature of many multicellular lifeforms on Earth are hard, biological structures, such as animal bones and snail shells that are made from minerals.

3D Stellar Map: Neighboring Stars Could Disturb Solar System in Distant Future

ESA's new time-lapse video shows that close-by stars have the potential to cause disturbances to the solar system as they travel through our galaxy in the next hundreds of thousands of years.

Earth’s Sun: Facts About the Sun’s Age, Size and History

Read about the history and future of Earth’s sun as well as fun facts about the sun’s age, size, temperature, and phenomena like solar flares.

So Long, Cassini! Says Goodbye to the Saturn Probe

Farewell, Cassini, and thank you.

NASA's Kennedy Space Center Reopens Saturday, One Week After Hurricane Irma

NASA's Kennedy Space Center will finally reopen tomorrow , just over one week after it closed to prepare for Hurricane Irma.

See Where the Cassini Spacecraft Crashed into Saturn

The last photos NASA's Cassini spacecraft ever took were of its own grave.