Asteroids

The asteroid sample that is now on display at the National Museum of Natural History. By studying the retrieved space rocks, scientists aim to better understand how water and organic material first arrived on Earth.

How to See NASA's Bennu Asteroid Sample in Person

A tiny piece of the space rock made its public debut at the Smithsonian National Museum of Natural History, as scientists study the rest of the sample

The pair of asteroids, captured by NASA's Lucy spacecraft on November 1, 2023, from around 270 miles away.

NASA Finds a Surprise Second Asteroid During a Flyby Mission

While testing its tracking system, the agency's Lucy spacecraft discovered that Dinkinesh is not one space rock, but two

Dust from the Chicxulub impact may have plunged the planet into a cold, dark winter and halted photosynthesis.

Dust May Have Triggered the Global Winter That Killed the Dinosaurs

A new study, based on modeling, suggests fine silicate particles could have blocked sunlight and shut down photosynthesis across the globe

An artist's rendition of the Pysche asteroid. Data suggests that Psyche is between 30 and 60 percent metal, unlike any object in the solar system scientist's have observed up close before.

NASA Launches Mission to Study Distant Asteroid

The metal-rich object could hold clues about how our planet formed

The capsule holding the asteroid sample shortly after touching down in the desert on September 24 at the Department of Defense's Utah Test and Training Range.

A Sample of Ancient Asteroid Dust Has Landed Safely on Earth

NASA's OSIRIS-REx mission retrieved bits of rock and dust from the asteroid Bennu, which could help scientists uncover the origins of life on our planet

Dimorphos, a moonlet orbiting the asteroid Didymos, as seen by NASA's DART spacecraft 11 seconds before impact from 42 miles away.

The Asteroid Hit by NASA Seems to Be Moving Strangely, High School Students Find

After the DART spacecraft made contact with Dimorphos last year, the space rock's orbit is declining more than expected, according to preliminary research

Dusty debris discs surround the young star Fomalhaut. The two innermost asteroid belts had never been seen before Webb revealed them.

James Webb Telescope Reveals Asteroid Belts Around Nearby Young Star

The findings suggest the star Fomalhaut may have orbiting planets hidden among its rings of debris

Mars and Deimos in a high-resolution composite image captured by the United Arab Emirates' Hope probe

See the First Detailed Close-Ups of Mars' Moon Deimos

A United Arab Emirates spacecraft took a high-resolution look at the mysterious moon and uncovered new evidence about its origin

An orbital diagram shows that 2023 BU's trajectory (in red) passed closer to Earth on January 26, 2023 than the orbits of geosynchronous satellites (in green). 

An Asteroid Just Passed Very Close to Earth

The truck-sized space rock came within 2,200 miles of our planet, closer than some satellites

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The Ten Most Significant Science Stories of 2022

From Omicron’s spread to a revelation made using ancient DNA, these were the biggest moments of the past year

A red-eyed treefrog hangs on to a leaf in Costa Rica.

Why Frogs Survived the Asteroid That Wiped Out the Dinosaurs

Not too big, not too small—they were just the right size to live through Earth’s worst day

An artist's rendition of an asteroid. 

Three Near-Earth Asteroids Were Hiding in the Sun’s Glare

One of them, which measures nearly one mile wide, might cross paths with Earth in the distant future

Asteroid moonlet Dimorphos as seen by the DART spacecraft 11 seconds before impact. 

NASA Successfully Altered an Asteroid’s Orbit

The agency's DART mission exceeded expectations, marking the first time humans have changed the trajectory of a celestial body

NASA's Double Asteroid Redirection Test (DART) spacecraft launched in November 2021 in California, riding atop a SpaceX Falcon 9 rocket.   

NASA Successfully Crashed a Spacecraft Into Its Asteroid Target

The Double Asteroid Redirection Test (DART) is a first step toward defending Earth from threatening space rocks

A second asteroid may have struck the dinosaurs at the end of Cretaceous period, around 66 million years ago

The Dinosaur-Killing Asteroid May Have Had a Companion

A newly discovered crater suggests a second impact that would have triggered underwater landslides and tsunamis

The carbon-rich asteroid is of interest to researchers because the chunk of rock has remained unchanged since the formation of the solar system 4.5 billion years ago.

Building Blocks of Life Found on Samples Collected From an Asteroid

The find suggests that amino acids could land on Earth on meteorites

Researchers turned to Mercury for the possibility of impact-born diamonds because previous surveys of the planet and molten rock found that the surface may have fragments of graphite, a carbon-rich mineral.

Mercury's Cratered Crust May Hold Glittering Gemstones

Fragments of a graphite shell from the planet's past and a series of violent meteorite impacts may have combined to form sparkling diamonds

Reconstruction of debris surging into the Tanis River as impact spherules rain down from the sky. A dinosaur tries to get away from the disaster.

Asteroid That Decimated the Dinosaurs Struck in Spring

Clues from fossil fish help scientists pinpoint the season when Earth’s fifth mass extinction began

One reader wonders if European modernists thought of the American painter Georgia O’Keeffe as a remarkable artist.  

Was Georgia O'Keeffe's Genius Appreciated Outside of America? And More Questions From Our Readers

You've got questions. We've got experts.

Stargazers watch Comet Neowise shoot across the sky on July 19, 2020 outside of Los Angeles, California.

Ten Dazzling Celestial Events to See in 2022

Stargazers in North America can look forward to meteor showers, lunar eclipses and a stunning multi-planet lineup this year

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