Outer Space

Boeing's Starliner spacecraft is seen docked at the ISS. After helium leaks and thruster issues, the craft will make an uncrewed return to Earth.

NASA's Starliner Astronauts Will Return on SpaceX Craft in February, Turning an Eight-Day Mission Into Eight Months on the ISS

Boeing’s Starliner spacecraft no longer meets safety standards after experiencing technical issues in June, and it will return to Earth uncrewed, the space agency announced

A 2023 commemorative stamp from Serbia’s postal service showing Milutin Milanković alongside illustrations of some of his scientific work.

This World War I Prisoner of War Solved the Mystery of the Ice Ages

Serbian scientist Milutin Milanković changed our understanding of Earth’s climate—and did a key part of his work while detained by Austro-Hungarian forces

The Polaris Dawn crew at the Kennedy Space Center, from left to right: Anna Menon, Scott Poteet, Jared Isaacman and Sarah Gillis.

Groundbreaking Mission Attempting the First Private Astronaut Spacewalk Will Target Tuesday Launch

Polaris Dawn is set to be the farthest humans have traveled from Earth since the Apollo program and will test new technology in a "radiation belt" surrounding our planet

A scan of a color copy of the original computer printout bearing the Wow! signal, taken several years after the signal's 1977 arrival.

Mysterious 'Wow!' Radio Signal Might Finally Have an Explanation—and No, It's Not Aliens

The infamous signal recorded in 1977 might have been a laser-like beam of radiation from a hydrogen cloud energized by a powerful, magnetic star, preliminary research suggests

A view of the lunar south pole, with Shackleton Crater at the center, assembled from images taken by NASA's Lunar Reconnaissance Orbiter.

Scientists Suggest Freezing Endangered Animals' Cells and Preserving Them on the Moon

Shadowed areas in lunar craters may be cold enough to safeguard species' DNA amid "climate disasters and social disasters" on Earth, according to Smithsonian-led research

A full moon rises over the Vasquez Rocks in California.

A Rare 'Super Blue Moon' Will Be Visible Monday Night: What Does That Mean?

Tonight’s full moon will be bigger and brighter than usual, and it’s the third of four full moons this summer

Göbekli Tepe is an archaeological site in southern Turkey.

Could These Carvings in Turkey Be the World's Oldest Lunisolar Calendar?

One researcher thinks the V-shaped markings engraved into a pillar thousands of years ago may represent the days of the year

An artist's illustration of the WISE spacecraft in orbit around Earth. The mission was renamed NEOWISE in 2013 to reflect a new focus on finding near-Earth objects.

NASA Retires Orbiting Telescope That Charted Asteroids for Over a Decade

NEOWISE, which looked for potentially hazardous objects in the solar system, received its last command on Thursday and will burn up when it re-enters Earth's atmosphere

Humans couldn't survive outdoors on Mars for a number of reasons, including its extremely low temperatures. Scientists are studying ways to terraform the planet to make it more hospitable.

Humans Could Warm Up Mars for Space Travelers by Spraying Tiny Metal Rods Into Its Atmosphere

Researchers propose a new technique for making the Red Planet more habitable by engineering heat-trapping nanoparticles from Martian dust

The tinfoil-covered vial at right holds about four grams of an asteroid brought to Earth from deep space. It may also hold the key to how life began here. The vial at left holds ground-up quartz that will act as a control in chemical investigations.

Inside Scientists’ Quest to Find the Secrets of Life in Four Grams of Asteroid Dust

NASA researchers are scrutinizing rocks and dirt brought to Earth from the asteroid Bennu

NASA’s Boeing Crew Flight Test astronauts Butch Wilmore and Suni Williams on the International Space Station on June 13.

NASA Astronauts Launched on Eight-Day Mission Might Have to Remain on the ISS Until February

After technical issues on Boeing's Starliner spacecraft, the space agency says it's considering bringing the astronauts back to Earth on a SpaceX Crew Dragon instead

Astronaut Buzz Aldrin, as photographed by Neil Armstrong on the surface of the moon during the Apollo 11 mission in 1969. Researchers looked at lunar soil samples collected during the Apollo missions for the new study.

Meteorite Strikes Are the Primary Creator of the Moon's Thin Atmosphere, Study Finds

Researchers examined lunar soil samples collected during the Apollo missions to determine which weathering processes contribute most to replenishing the moon's atmosphere

The visible side of the moon.

Scientists Find Water Molecules in Lunar Rock Sample for the First Time

The samples from China's Chang'e 5 mission shed light on lunar resources that could be vital to future missions and habitations

The Perseids occur when Earth passes through the debris field of the comet 109P/Swift-Tuttle.

How to Watch the Perseids, the 'Best Meteor Shower of the Year'

The annual celestial event is one of the year's most anticipated, and it will peak from August 11 to 12

Apollo 11 astronaut Buzz Aldrin deploys a device to detect moonquakes during the first moonwalk.

Thousands of Moonquakes Rocked the Apollo Landing Sites in Less Than a Decade

A new study found 22,000 previously unidentified lunar seismic events recorded between 1969 and 1977

NASA's Perseverance rover took this selfie next to "Cheyava Falls," the rock in the center of the photo that might hold evidence of ancient life on Mars.

Mars Rover Finds Three Possible Signs of Ancient Life on a Single Rock

Scientists were cautiously optimistic about Perseverance's discovery, though they indicated further research is needed before drawing definitive conclusions

After Curiosity unexpectedly cracked open a Martian rock, it revealed yellow crystals that scientists determined were elemental sulfur.

NASA's Curiosity Rover Accidentally Discovers Sulfur Crystals on Mars

The rover’s wheel cracked open a rock and revealed pure elemental sulfur, which researchers have never seen on the Red Planet before

Meteors fly above Sydney, Australia, on July 28, 2022. The Southern Delta Aquariids will be easiest to see from the Southern Hemisphere, but will still be visible at southern latitudes in the United States.

How to Watch the Southern Delta Aquariids Meteor Shower

Though not as prolific as the Perseids, this annual spectacle is 'scientifically interesting' because its comet of origin remains a mystery

Astronomers released 25 new images to celebrate the 25th anniversary of the Chandra X-Ray Observatory's launch.

See 25 Stunning Images of the Cosmos From the Chandra X-Ray Observatory as It Celebrates 25 Years in Space

Chandra, the world’s most powerful X-ray telescope, has been peering at black holes, stellar explosions and dark energy for a quarter-century

An illustration of NASA's VIPER rover drilling on the moon

NASA Cancels VIPER Moon Mission After Spending $450 Million to Build a Rover

The project was intended to look for water ice in the shaded craters on the lunar south pole

Page 3 of 74