First Posted: 02/09/11 09:34 BST Updated: 01/11/11 10:12 GMT
Scientists in the US have warned Nasa that the amount of so-called space junk orbiting Earth is at tipping point.
Read the whole story: BBC News
Space Junk Explained: What Are The Chances You'll Get Hit By A Piece Of The Falling Satellite?
NASA To Launch Two 'Grail' Moon Probes To Measure Gravity
Supersonic Stellar Jets In Motion: NASA's Hubble Telescope Brings Jets To Life (VIDEOS)
Space debris 'at tipping joint': Scientists in the United States call on the space agency, Nasa, to clean up spa...
Study: Space Debris Has Reached A 'Tipping Point' : The Two-Way : NPR
Report says space debris past ‘tipping point,’ NASA needs to step up action
Powerful Sun Storms May Sweep Away Space Junk | Solar Storms & Space Weather | Space Junk & Orbital Debris | Space.com
Did some parts of #PhobosGrunt hit land?
520 Days Later: Fake Mars Mission Ready to Return | Wired Science | Wired.com
My Way News - Russian space probe crashes into Pacific
Second Russian satellite set to fall to Earth | News | guardian.co.uk
Falling Satellite Poses Little Risk to Public, NASA Says | Upper Atmosphere Research Satellite | UARS & Space Junk | Space.com
Space Debris: Five Unexpected Objects That Fell to Earth
ESA - Space Debris
Debris prompts space station crew to seek shelter | Reuters
Astronauts evacuate the International Space Station during space debris close-call
Space Debris: When Will We Clean Up Our Act? (VIDEO)