Space Debris - Earth Orbit = Garbage Dump

Heiner Klinkrad is the Debris Expert for the European Space Agency. He gives us a grand tour of how humans have trashed space for 50 years.
old_spidersays...

Take a clue from video games: armor skins and EM shielding. You won't get rid of space debris. Most of it has absolutely nothing to do with human activity and has been flying around the universe for eons. Deal with it.

pho3n1xsays...

isn't it true though, that since there is no propulsion on the debris, it will eventually fall into earth's atmosphere, and burn up on the way in. causing no incidents, except maybe wishing on a 'falling star'...

Claytonsays...

Yes, the following can contribute to orbital decay.
Perturbations due to Non-spherical Earth (including tidal drag)
Third-Body Perturbations (moon, planets, etc.)
Perturbations from Atmospheric Drag
Perturbations from Solar Radiation (Intense solar activity causes our atmosphere to expand outward in addition to the effects of solar wind itself)

"The space shuttle and the ISS both orbit within the thermosphere. The thermosphere is about a million times less dense than the atmosphere at sea level, but that's enough to affect the orbits of these satellites."

http://orbitaldebris.jsc.nasa.gov/faqs.html
12). How long will orbital debris remain in Earth orbit?
The higher the altitude, the longer the orbital debris will typically remain in Earth orbit. Debris left in orbits below 600 km normally fall back to Earth within several years. At altitudes of 800 km, the time for orbital decay is often measured in decades. Above 1,000 km, orbital debris will normally continue circling the Earth for a century or more.

IIS altitude: roughly 350 km
Hubble altitude: roughly 600 km
"The ISS will sink a couple of kilometers per year in the future because of atmospheric drag - in its current configuration"

Over a thousand more pieces of junk just added:
http://news.bbc.co.uk/2/hi/science/nature/6398513.stm

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