Clash of the satellites in orbit

On February 10, two satellites, one American and one Russian collided in orbit.
The US satellite was part of the Iridium system (group of telecommunications satellites), while the satellite was a Russian military satellite (Kosmos-2251). The clash would be at 800 Km height.
The debris resulting from the collision between the two satellites could go to hit other Russian satellites that are nearby and would be equipped with nuclear reactors, according to Russian sources note. The risk is that a possible confrontation between the debris originated from the clash and these satellites can lead to leakage of radioactive material in orbit.
Instead there should be no risk for the International Space Station (International Space Station, ISS), which is in orbit at 430 km altitude, the risks would be much greater for the Hubble Space Telescope which is 600 km in height.


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