Greenland Rocks Suggest Earth’s Magnetic Field Is Older Than We Thought
Analysis finds that the planet’s protective shield was in place by at least 3.7 billion years ago, as early life arose
Stories by Alexandra Witze
Two Interstellar Intruders Are Upending Astronomy
Researchers grapple with the meaning of the first objects entering our solar system from beyond
New 5G Wireless Deal Threatens Accurate Weather Forecasts
Meteorologists say international standards for wireless technology could degrade crucial satellite measurements of water vapor
Second Ever Interstellar Comet Contains Alien Water
Scientists have spotted signs of water as the object 2I/Borisov streaks toward the sun
GPS Is Doing More Than You Thought
Here are five scientific applications that take the navigation system beyond the map
Hawaii Telescope Protest Shuts Down 13 Observatories on Mauna Kea
Construction of the Thirty Meter Telescope was supposed to start on July 15
Controversial Telescope Set to Begin Construction in Hawaii
The Thirty Meter Telescope project has faced years of legal challenges over planned Mauna Kea site
Can NASA Really Return People to the Moon by 2024?
Donald Trump wants U.S. astronauts back on the Moon. But his ambitious plan faces formidable political, financial and technical challenges
Mars Rover Detects “Excitingly Huge” Methane Spike
NASA’s Curiosity rover reports the highest-ever reading of the gas at the planet’s surface
Global 5G Wireless Networks Threaten Weather Forecasts
Next-generation mobile technology could interfere with crucial satellite-based Earth observations
First “Marsquake” Detected on Red Planet
NASA′s InSight lander hears ripples of seismic energy rippling through Mars
How Long Do Neutrons Live? Physicists Close In on Decades-Old Puzzle
Researchers are narrowing down their measurements of how long the subatomic particle survives on its own
Mars Methane Hunt Comes Up Empty, Flummoxing Scientists
Trace Gas Orbiter spacecraft did not find the gas in red planet’s atmosphere during its first months of operation
Asteroid’s Bumpiness Threatens U.S. Plan to Return a Sample to Earth
NASA mission finds asteroid Bennu littered with big boulders and spraying out particles
Trump Seeks Big Cuts to Science Funding—Again
The president wants to cut spending at the National Institutes of Health and Environmental Protection Agency, but it is not clear whether Congress will go along
As the Shutdown Persists, Here Are 5 Ways It Will Impact Science
A second wave of closures looms as the government funding fight barrels towards a record-breaking fourth week
NASA Exoplanet Hunter Racks Up Bizarre Worlds and Exploding Stars
The Transiting Exoplanet Survey Satellite has identified at least eight planets, including one with a mass more than 20 times that of Earth
Bevy of Mysterious Fast Radio Bursts Spotted by Canadian Telescope
Bounty includes second known example of a repeating burst
Cosmic Collision Created "Snowman" MU69—the Farthest World Ever Explored
Close-up images from NASA’s New Horizons probe show the space rock has two distinct lobes
Asteroid-Sampling Mission Zeroes in on Tiny Space Rock
U.S. spacecraft aims to return the largest trove of space dirt to Earth since NASA’s final Apollo mission in the 1970s
