Latest articles by Leonard David
Secretive X-37B Military Space Plane Launch May Be Delayed by Glitch
The unmanned X-37B is ready to fly, but its Oct. 25 launch may be pushed back by an investigation into a rocket glitch.
New Rules for Meteorite Hunters Unveiled
The new directives cover all space rocks found on public lands.
Private Space Travel Gets a Big Boost in California
California Gov. Edmund G. Brown Jr. signed a bill Friday (Sept. 21) to limit liability for private spaceflight companies.
One Red Cent: Curiosity Rover Totes Penny on Mars
The six-wheeled robot is carrying a 1909 Lincoln penny for use as a calibration target.
US Scientists to Use Chinese Moon Lander for Space Research
China's planned moon lander will be used for astronomy, too, through a new deal signed by a U.S. research group.
Ping Pong Ball 'Satellites' Have Balloon Ride to Edge of Space
One thousand ping pong balls are headed to the edge of space … for science.
Super-Close Asteroid Flyby Reveals Space Rock Secrets
The asteroid 2012 KT42 was the sixth-closest asteroid encounter on record.
World's 1st Private Deep-Space Telescope to Hunt Dangerous Asteroids
The Sentinel Space Telescope is a private asteroid-hunting observatory planned by the B612 Foundation.
Hundreds of Meteorites Uncovered in Antarctica
A team of scientists was shivering but productive over a month-long stay.
Crash of Falling Russian Spacecraft Imminent, Experts Say
Russia's doomed Mars probe Phobos-Grunt will fall to Earth between Jan. 15 and 16.
Makers of Tiny Satellites View Space Station as Launch Pad
Small spacecraft called CubeSats could be studied and launched from the International Space Station.
Titanic Discoverer Charts New Sea Adventures
Robert Ballard speaks on future of deep sea exploration and archaeology.
Moon Microbe Mystery Finally Solved
When the Apollo 12 crew returned pieces of a moon probe to Earth, scientists found microbes from Earth inside.
Huge Asteroid to Pass Near Earth in November
This space rock won't hit Earth, but it'll be one close call.
Grains of Asteroid Dust Get a Good Going-Over in Japan
Japanese scientists over the moon about asteroid samples returned by the Hayabusa probe.
U.S. Military in Talks to Share Fireball Data
Secret U.S. military satellites perform vital national security roles for reconnaissance, but they also spot fireballs in Earth's atmosphere.
Asteroid Threat Early Warning System Proposed
Scientists are taking a hard look at a proposal to keep a high-tech, yet low-cost, eye on the heavens for threatening asteroids.
