An illustration shows a satellite damaged by space debris. Objects that don’t burn up in the atmosphere can pose a danger when they fall back to Earth.

With Space Junk on the Rise, Is a Catastrophic Event Inevitable?

Debris from rockets and satellites can fall back to Earth or collide with other objects, and wreckage that burns up can harm the ozone layer

Relay 2 was an American communications satellite launched in 1964.

Astronomers Detected a Mysterious Radio Burst. It Turned Out to Be From a Dead NASA Satellite

The signal detected last year came from Relay 2, a communications satellite that has been defunct since 1967

The Beni River snakes across the landscape in Bolivia, a country that has faced significant deforestation and is among the nations that have experienced the most forest loss globally.

These Colorful Satellite Views Reveal Our Forests in Unprecedented Detail and Showcase the Potential of the New Biomass Mission

The European Space Agency’s satellite will measure trunks, branches and stems in forests to shed light on how much carbon is stored in trees across various continents

The sun’s corona on May 23, 2025, as imaged by the ASPIICS coronagraph aboard Proba-3. The hair-like structures appeared with the help of an image processing algorithm.

See the Beauty of an Artificial Solar Eclipse, Created With a First-of-Its-Kind, ‘Perfect’ Satellite Formation

Two satellites’ highly precise alignment allows scientists to study the sun’s outer atmosphere like never before

A satellite image captures the trail of destruction running through Kentucky's Daniel Boone National Forest left after a tornado swept across the state on May 16.

Kentucky’s Devastating Tornado in May Left a Trail of Destruction Visible From Space

Satellite imagery released by NASA features a giant brown streak where the storm sliced through the Daniel Boone National Forest

NASA’s Solar Dynamics Observatory (SDO) captured this image of extreme solar activity on May 10, 2024.

The U.S. Ran Its First Space Weather Preparedness Drill—Here’s How It Went

Ironically, the exercise last May was interrupted by a real scenario, when Earth was hit by the strongest solar storm in two decades

Houston is the fastest-sinking of the 28 most populated U.S. cities, according to a new study that examined the urban areas through satellite observations. The Texas city got most of its water from the ground in the 1950s to ’70s, which led to subsidence.

The Land Beneath the Biggest U.S. Cities Is Sinking, Finds New Analysis of Satellite Data

Largely due to groundwater pumping and shifting of land after the last ice age, major urban areas are subsiding, which could destabilize buildings or worsen flooding

An artist's rendition of what Eos would look like from Earth if it were visible to the naked eye.

Astronomers Discover a Giant, Glowing Molecular Cloud Hidden in Earth’s Cosmic Neighborhood

The cloud, named Eos after the Greek goddess of dawn, had eluded researchers because it contains very little carbon monoxide

Workers prepare Venera 4, a Soviet space probe, for its flight to Venus' atmosphere in 1967.

A Soviet Spacecraft Is About to Crash Back to Earth After Being Stuck in Orbit for 53 Years

The Cosmos 482 lander was intended to reach Venus, but it has instead been circling Earth since 1972

Biomass will monitor the Earth's tropical forests over the next five years.

A New Satellite Will Map the Carbon Content of Rainforests From Space, and It’s Set to Launch This Month

The European Space Agency’s new probe, Biomass, will spend five years orbiting the planet and gathering radar imagery of forests across multiple continents

Spectrum launched from the Andøya Space Center in Norway before plumetting into the icy sea.

First Orbital Rocket Launched From Western Europe Crashes Into Sea After Roughly 30-Second Flight

Isar Aerospace, the company behind the rocket, is still heralding the launch as a success due to the data it provided

This portrait of Cristina Roccati (left) is by the contemporary Italian painter and engraver Matteo Massagrande. In the background is the only depiction of Roccati (right) from the 18th century.

How an 18th-Century Female Physicist Broke Boundaries and Inspired the Generations Who Followed

Cristina Roccati graduated from the University of Bologna when few other Italian women earned degrees, and she taught physics for decades

Mars and Deimos viewed by Hera's Hyperscout H

Check Out These Rare Images of Deimos, One of Mars’ Mysterious Moons

The spacecraft Hera’s photographs are some of the few visuals ever captured of the Martian moon’s dark side

Greenhouse gas emissions will decrease the amount of satellites that can safely orbit Earth, according to a new study.

Climate Change Might Increase Satellite Collisions, Limiting How Many Can Safely Orbit Earth, Study Finds

Greenhouse gas emissions could reduce drag in the upper atmosphere, leaving more space debris in orbit and making satellites more vulnerable to damage, according to new research

The Palos Verdes Peninsula in Los Angeles experiences slow-moving landslides that accelerated last fall, according to recent research.

Parts of California Are Sinking, and It Could Worsen the Effects of Sea-Level Rise, NASA Study Finds

The ground in many parts of the state—including Los Angeles, San Francisco and the Central Valley—is subsiding due to groundwater withdrawal, landslides and compacting of sediment

Chorus waves can produce high-energy “killer electrons” that can damage satellites.

Mysterious ‘Chirping’ Waves Detected 100,000 Miles Above Earth Are Surprising Scientists

Chorus waves, quick bursts of energy known to occur relatively close to Earth and around other planets, were found in an unexpected part of the magnetosphere, according to a new study

Did colonial Americans wear wristwatches? 

Did Colonial Americans Wear Wristwatches? And More Questions From Our Readers

You’ve got questions. We’ve got experts

The Large and Small Magellanic Clouds were recently captured by NASA astronaut Don Pettit aboard the ISS.

NASA Astronaut Shares Breathtaking Photos From the ISS, Featuring Galaxies and Glowing ‘Star Trails’

On his fourth flight, Don Pettit is once again sharing the art of astrophotography, capturing and posting pictures of Earth, satellites and space

A man spotted the scar while looking at Google Earth satellite imagery earlier this year.

A Man Noticed a Strange Shape on the Ground on Google Earth. It Turned Out to Be the Mark of an Undetected Tornado

Geoscientists in Australia suggest a strong tornado swept across the Nullarbor Plain in November 2022 and made the 6.8-mile-long scar on the landscape—without anyone noticing

Screenshot from a video of the fireball reported to the American Meteor Society.

Watch a Starlink Satellite Plummet Through the Atmosphere in Videos Captured Last Weekend

The fireball—one of many decommissioned satellites from SpaceX’s internet service—was spotted by dozens of people across at least four states, and many mistook it for a meteor

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