Other activities polluting the environ- ment:
(1) The scrap of the satellites launched into space, hollow bodies of the space crafts. useless pieces of metals, the waste
abandoned by the astronauts in space, etc. cause the pollution in space.
(2) Various chemicals sprayed to bring artificial rain and the radio-active pollution caused due to the use of nuclear power also pollute the environment.
(3) Natural disasters such as volcanic eruption, carthquake, river floods, etc. also pollute the environment.