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NASA

The updated measurements won't take away Jupiter's status as the solar system's biggest planet.

Scientists Say That Jupiter—the Solar System’s Largest Planet—Might Be Slightly Smaller Than Previously Thought

Updated measurements from NASA’s Juno spacecraft could help researchers better understand the planet’s mysterious interior, as well as other gas giants

The JADES-ID1 protocluster

Astronomers Spot a Huge Cluster of Galaxies Forming Earlier in Cosmic History Than Thought Possible

The young galaxy cluster existed about 12.8 billion years ago and has an estimated mass 20 trillion times that of the sun

An image containing nearly 800,000 galaxies from NASA's James Webb Space Telescope, overlaid with dark-matter clumps shown in blue

See the Most Detailed Map of Dark Matter Ever Made, Bringing Astronomers a Step Closer to Unraveling Its Mysterious Nature

The invisible stuff makes up about 85 percent of all matter in the universe, but researchers know little about it

The Valles Marineris canyon system, where the scientists focused their study

Three Billion Years Ago, Mars May Have Been Half Covered by a Sea the Size of the Arctic Ocean

Data from several probes studying the Red Planet helped geologists map what seems to be an ancient coastline

An artistic illustration of the MAVEN orbiter and Mars

NASA to Resume Search for Missing Mars Orbiter, but Prospects of Re-establishing Communication With It Seem Slim

Scientists haven’t heard from the MAVEN orbiter since December 6. It had been studying the Martian atmosphere for over a decade

Cloud-9, shown in magenta. The circle represents the region where researchers focused their search for stars—the peak of radio emission.

Astronomers Find an Odd Space Cloud, Like a Galaxy Without Stars, That Could Shed Light on the Secrets of Dark Matter

Named “Cloud-9,” the discovery is a new type of celestial object known as a RELHIC, which is unlike anything scientists have ever observed

Humans have continuously lived and worked aboard the International Space Station (ISS) since November 2000.

NASA to Bring ISS Crew Home Early Because of an Astronaut’s Health Issue, Marking the First Medical Evacuation of the Spacecraft

The unnamed crew member is in stable condition after an undisclosed incident on Wednesday, but the agency is bringing them back to Earth for medical testing

Michaela "Michi" Benthaus in the center with her five crewmates

This Aerospace Engineer Just Became the First Wheelchair User to Travel to Space

A brief commercial flight with space tourism company Blue Origin made Michaela “Michi” Benthaus’ childhood dream come true

Six infrared images of Titan created with data from NASA's Cassini spacecraft

Saturn’s Moon Titan May Not Have an Underground Ocean After All

A new analysis of data from NASA’s Cassini spacecraft may upend Titan’s status as an ocean world. But it might still have pockets of water within a slushy ice layer

David Rankin, operations manager at the Catalina Sky Survey, keeps tabs on space rocks in search of new and potentially hazardous asteroids.

From a Remote Observatory, He’s Defending Our Planet. Get a Glimpse Inside the Life of a Doomsday Asteroid Hunter

David Rankin of the Catalina Sky Survey in Arizona spends nights scanning the solar system for potentially catastrophic space rocks. Here’s what he has to say about that “high consequence” work, an interstellar comet and living with uncertainty

NASA’s Lucy spacecraft, which is investigating a group of asteroids that share Jupiter's orbit around the sun, snapped this image on September 16 as 3I/ATLAS approached Mars. 

Interstellar Comet 3I/ATLAS Is About to Make Its Closest Approach to Earth. Here’s How to View It With Binoculars or a Telescope

On December 19, avid skywatchers can catch a glimpse of the mysterious visitor through powerful binoculars or a telescope when it’s around 170 million miles from our home planet

Supernova remnant Cassiopeia A, which sits within the Milky Way

Astrophysicists Found an Abundance of Odd Elements Essential for Life in the Leftovers of an Exploded Star

The surprisingly high amounts of chlorine and potassium in a supernova remnant could help solve the mystery of where these crucial elements come from

Astronauts Tom Stafford (left) and Wally Schirra (right) demonstrating with two model space crafts during an interview in the 1960s

Sixty Years Ago, When Instruments Were Played in Space for the First Time, It Was ‘Jingle Bells’ All the Way

Astronauts Tom Stafford and Wally Schirra delighted mission control with their rendition of the Christmas classic

An image simulating the contamination from satellite trails in observations by ARRAKIHS, a European Space Agency telescope planned to launch in 2030

More Than 500,000 Satellites Are Set to Orbit Earth by 2040. They May End Up Photobombing the Images Captured by Space Telescopes

Fleets of satellites interfere with snapshots taken by Earth-bound observatories. But a new study suggests these orbiters will also contaminate observations by four space telescopes, including Hubble

The moss spores germinated after enduring space outside of the ISS.

Moss Spores Survived Nine Months Outside the International Space Station. Then, They Grew Normally on Earth

While lunar gardens are still out of reach, the study sheds more light on terrestrial biology that may not be limited to our planet’s surface

This image was captured by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter in October. 

More Than a Dozen NASA Spacecraft Have Glimpsed Interstellar Comet 3I/ATLAS. Now, You Can View New Images That They Captured

The space agency got a close look at the interstellar visitor over the past few months as it zipped by Mars and the sun

The 1999 Leonid meteors as seen from the Leonid Multi-Instrument Aircraft Campaign

Dark Moon, Shooting Stars: How to Catch the Stunning Leonid Meteor Shower This Weekend

A waning crescent moon will offer stargazers an optimal viewing experience this year, with 10 to 15 meteors visible each hour from Sunday into Monday

This glimpse of the northern lights was captured in Missouri on November 11, 2025.

The Sun Erupted With the Year’s Largest Solar Flare This Week, and Space Weather-Fueled Aurora Activity Could Continue

The last in a series of three coronal mass ejections hit Earth on Wednesday, so experts are keeping an eye on geomagnetic storm potential

A clip from Georges Méliès' 1902 short film, A Trip to the Moon

In an Out-of-This-World Observation, a Museum Curator Filmed the Moon Getting Struck by Meteors—Twice

Lunar impacts could affect plans for future bases on the moon

A supermoon in July 2022

November’s Full Beaver Supermoon Peaks on Wednesday—and It Will Be the Year’s Biggest

Supermoons occur when full moons coincide with the moon’s closest position to Earth in its orbit

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