In a universally contemned, knucklehead move, the Russian
government used an anti-satellite missile to pulverize a deactivated satellite located
in a low earth orbit 40 miles below the known trajectory of the International
Space Station. See, e.g., https://www.reuters.com/world/us-military-reports-debris-generating-event-outer-space-2021-11-15/;
https://www.bbc.com/news/science-environment-5929910;
https://apnews.com/article/space-exploration-science-business-697f5aa719331ab6e74102ebb06b52d8.
Before explaining
how this bonehead action did not have to risk life and property, let us make
two contestable assumptions for the sake of argument:
1) Anti-satellite
technology has some legitimate and lawful, national defense uses, so the
Russian technology test comports with the global treaty limiting space
exploration and exploitation to “peaceful uses” “for the benefit and in the
interests of all countries.” See Treaty
on Principles Governing the Activities of States in the Exploration and Use of
Outer Space, including the Moon and Other Celestial Bodies, available at: http://www.unoosa.org/oosa/en/ourwork/spacelaw/treaties/introouterspacetreaty.html;
and
2) Russian
personnel determined that the test would not damage the International Space
Station, or trigger any other sort of liability for harm, even though over 1500
additional pieces of space debris were created at a location certain to fall down
toward earth and cross over the Space Station orbit. See Convention on International Liability for
Damage Caused by Space Objects; available at: http://www.unoosa.org/oosa/en/ourwork/spacelaw/treaties/introliability-convention.html.
Arguably, nations need to test anti-satellite technology under
actual orbital conditions rather than blow up a mockup satellite on the ground. There must be some benefit in examining the
breadth and depth of a blown-up satellite debris field. But did Russia have to target a dead
satellite so close to, and above, the Space Station?
Luckily,
the occupants of the Space Station, including two Russian cosmonauts, avoided harm,
but the odds for a collision increase, even without the deliberate increase in
the amount of space junk. New broadband
low earth orbiting satellite constellations, operate near each other and number
in the thousands. Even in low earth
orbit, only a few hundred miles from earth, tiny specks of debris travel at
speeds in excess of 15,000 miles per hour.
If you have
had a car windshield crack from a stone thrown at it by a truck, you can appreciate
the potential for damage from small objects with high velocity. In low earth
orbit low gravity and extreme speed combine to create the real potential for
more than a crack or divot. The worse
case scenario, known as the Kepler Syndrome, (see https://en.wikipedia.org/wiki/Kessler_syndrome)
renders most, if not all, of space unable to support satellite networks,
because of the ever increasing risk of collisions.
Way to go
Russia!