10 July 2012, 07:00 AM ET
Test your knowledge of the satellites around Earth in this quiz about our planet's artificial satellites.
25 June 2012, 11:35 AM ET
The U.S. military currently tracks roughly 22,000 pieces of debris in orbit.
11 May 2012, 06:45 AM ET
Envisat is roughly the size of a school bus.
09 May 2012, 10:48 AM ET
After 10 years in space, the giant satellite Envisat's mission is no more.
30 April 2012, 05:05 PM ET
SETI's Allen Telescope array will help track orbital debris
20 April 2012, 05:17 PM ET
The massive Envisat satellite mysteriously went silent on April 8.
16 April 2012, 11:19 AM ET
The Envisat satellite is 10 years old and the size of a school bus.
09 April 2012, 03:46 PM ET
The remains of the Molniya 1-89 satellite crashed in the Pacific Ocean on April 7.
05 April 2012, 04:29 PM ET
Focused pulses of atmospheric gases could be fired into the path of space trash.
24 March 2012, 01:43 AM ET
Space station astronauts will take shelter in Soyuz lifeboat capsules when the debris passes by within 9 miles.
12 March 2012, 01:44 PM ET
Lockheed Martin's prototype system locked onto orbiting objects in a recent test.
24 February 2012, 04:12 PM ET
With a bit of effort, the world could keep space junk at current levels for 200 years.
24 February 2012, 01:19 PM ET
The spherical object landed near a house and damaged trees as it fell to the surface.
16 February 2012, 11:23 AM ET
Aerospace firm MDA is developing a spacecraft called the Space Infrastructure Servicing vehicle to refuel satellites.
15 February 2012, 03:04 PM ET
See how Switzerland plans to clean up space junk using a small claw-equipped satellite.
15 February 2012, 02:33 PM ET
The Swiss CleanSpace One satellite will test ways to clean up space junk.
15 February 2012, 12:25 PM ET
The Swiss Space Center is developing a satellite, CleanSpace One, to tackle the growing danger of space debris orbiting Earth. The first model will rendezvous with an obsolete satellite, grab it and disintegrate with it in a controlled de-orbit.
30 January 2012, 05:54 PM ET
The sun's violent activity expands Earth's atmosphere, which increases the rate that space junk falls from orbit.
29 January 2012, 01:12 PM ET
The space junk was leftover debris from China's 2007 anti-satellite test, NASA says.
25 January 2012, 11:56 AM ET
The failed Mars probe Phobos-Grunt crashed to Earth on Jan. 15.
21 January 2012, 07:00 AM ET
Russia's ill-fated Phobos-Grunt spacecraft has been the centerpiece of conflicting reports and conspiracy theories.
17 January 2012, 06:42 PM ET
International cooperation is needed to keep space safe and secure over the long-haul, Secretary of State Clinton says.
16 January 2012, 04:56 PM ET
Questions still surround the precise location of Phobos-Grunt's fall.
15 January 2012, 01:25 PM ET
Phobos-Grunt re-entered Earth's atmosphere over the southern Pacific Ocean.
15 January 2012, 12:23 PM ET
Exactly where the Mars probe Phobos-Grunt will crash is unknown.
15 January 2012, 12:00 PM ET
Stories, videos, photo galleries and more about the doomed spacecraft.
14 January 2012, 02:29 PM ET
Russia's doomed Mars probe Phobos-Grunt will fall to Earth between Jan. 15 and 16.
13 January 2012, 04:26 PM ET
At this point, nobody knows when or where Phobos-Grunt will land.
13 January 2012, 11:16 AM ET
A piece of debris from a 2009 satellite crash forced the maneuver.
13 January 2012, 07:00 AM ET
The growing threat of space junk is now starring in a 3D film.
13 January 2012, 07:00 AM ET
Phobos-Grunt is slated to re-enter Earth's atmosphere between Jan. 14 and Jan. 16.
12 January 2012, 04:00 PM ET
Regular people have started paying attention to orbital debris.
12 January 2012, 09:48 AM ET
See photos and image stills from the new 3D film "Space Junk."
11 January 2012, 05:45 PM ET
Phobos-Grunt is predicted to crash to Earth west of the island of Java.
06 January 2012, 10:46 AM ET
A French skywatcher has recorded what is likely one of the last videos of the falling Phobos-Grunt space probe.
05 January 2012, 07:00 AM ET
The Phobos-Grunt spacecraft should re-enter our planet's atmosphere Jan. 15, officials say.