Space
Experts Weigh In on Pentagon UFO Report
The vast majority of examined incidents were not caused by U.S. advanced technology programs, the forthcoming report concludes. So what’s going on?
Stories by Leonard David
Space
Falling Uncontrolled from Space, Giant Chinese Rocket Highlights Risk of Orbital Debris
The Long March 5B rocket’s core stage could plummet to Earth as early as May 9
Space
Space Junk Removal Is Not Going Smoothly
Despite promising technology demonstrations, there is no one-size-fits-all solution for the growing problem of taking out the orbital trash
Space
As Perseverance Approaches Mars, Scientists Debate Its Sampling Strategy
The car-sized rover is the first step in an ambitious effort to bring pieces of the Red Planet back to Earth, but some crucial details remain undecided
Space
Arecibo Observatory to Close Its Giant Eye on the Sky
After suffering severe damage from broken cables that cannot be readily repaired, the observatory’s enormous radio telescope is now slated for “controlled decommissioning”...
Space
An Underappreciated Danger of the New Space Age: Global Air Pollution
As private launches increase dramatically, so will emissions of CO2, particulates and other noxious substances
Space
Water Found in Sunlight and Shadow on the Moon
Observations by NASA’s SOFIA telescope and Lunar Reconnaissance Orbiter reveal signs of water in sun-baked lunar soil, as well as in small, dark craters
Space
Is There Life on Venus? These Missions Could Find It
Following a tantalizing discovery, these spacecraft could be headed to Earth’s twisted twin in search of the truth
Space
Luna-25 Lander Renews Russian Moon Rush
The former front-runner in the lunar space race aims to rekindle its exploration after nearly half a century
Space
NASA’s Hunt for Lunar Water Intensifies
The space agency’s plans for sustainable lunar outposts could hinge on finding—and using—what may be the moon’s most precious resource
Space
NASA Proposes New Rules for Moon-Focused Space Race
The Artemis Accords could ensure a peaceful and prosperous future for lunar exploration—if everyone agrees to them
Policy & Ethics
Mars Needs Money: White House Budget Could Prompt Retreat from Red Planet
Proposed cuts could end decades of U.S. leadership in exploring that world
Space
Astronomers Battle Space Explorers for Access to Moon’s Far Side
Without protection from radio interference, a giant observatory on the moon’s hidden hemisphere could prove unworkable
Space
Reduce Red Tape for the Red Planet, Report Says
Regulations governing the responsible exploration of Mars and other worlds require regular, frequent updates, according to a new NASA review
Space
Will Future Lunar Bases Be Underground?
Lava tubes on the moon could be crucial sites for human outposts
Space
Science and Sustainability May Clash on the Moon
Lunar ice could be a crucial resource for future explorers. It could also be an astrobiological treasure trove. Can it be used as both?
Space
Huge Meteor Explosion a Wake-Up Call for Planetary Defense
Detonating over the Bering Sea, the blast was as powerful as a nuclear bomb
Space
Farside Politics: The West Eyes Moon Cooperation with China
Scientists and policy makers in the U.S. and Europe are seeking new ways to work with China on its ambitious lunar exploration program
Space
With First-Ever Landing on Moon’s Farside, China Enters “Luna Incognita”
The Chang’e 4 mission could have major effects on earthbound science and politics
Space
Scientists Double Down on Landing Sites for Sample-Collecting Mars Rover
NASA’s Mars 2020 mission could visit two locations where microbial life may once have thrived
