Latest articles by Jeremy Hsu
What began as a minor trash problem in space has now developed into a full-blown threat.
A flotilla of solar sail spacecraft could change the course of the asteroid Apophis – which is headed a little too close to Earth for comfort
An engineer hopes to buy an ailing satellite and reposition it to provide free Internet for developing countries
New observations of the Air Force's secretive unmanned X-37B space plane have put the spacecraft's classified mission back in the limelight.
New observations of the Air Force's secretive unmanned X-37B space plane have put the spacecraft's classified mission back in the limelight.
Putting a human on the moon may be beside the point for Iran
Top White House science advisor says the U.S. has global responsibility for asteroid detection.
The discovery may also help solve the methane mystery on Mars.
The U.S. leads in defense-related space programs, but its dependence upon the eyes in the sky could also make it vulnerable.
Wondering what's up with that Earth-sized planet in the habitable zone? We've got answers.
A control software glitch forced an abort of a laser test meant to shoot down a ballistic missile.
A $70,000 private rocket built by Danish volunteers aims for next year after a first launch attempt fizzled.
An ancient blue-green algae could help mine precious resources and bolster life support systems on the surface of Mars.
A close encounter between Chinese satellites points to China testing its growing space capabilities.
Human explorers can only reach a limited number of asteroids during the next several decades.
A $70,000 private rocket built by Danish volunteers is now set to carry a dummy into suborbital space on Thursday.
A $70,000 private rocket built by Danish volunteers could pave the way for cheap manned spaceflight.
Some astrophysicists were a bit puzzled by the choice of a $1.6 billion infrared space telescope as the top priority for the next decade of astronomy.
A much-anticipated report lays out the big telescopes that will push scientific discovery during the next decade or two.
A piece of the space station could transform into part of the spacecraft which carries humans to visit an asteroid.
NASA takes another step toward a future human mission to explore an asteroid by asking for expert input at a two-day workshop this week.
Japan's solar sail uses a novel on-and-off reflection technique to steer solely by the pressure of sunlight.
An adaptive optics system that uses many lasers for the first time allows telescopes to see wider views of the skies without the blurry effect of atmospheric turbulence.
