An international group of scientists, using data obtained from NASA's SOFIA, an infrared observatory, have concluded that supernova do indeed output enough material for planetary formation.
The groups observations reveal a particular cloud produced by a supernova explosion 10,000 years ago. The cloud contains enough dust to make 7,000 Earths.
The researchers had evidence that a supernova’s outward-moving shock wave can produce huge amounts of dust. The question was - would the dust continue to spread, after encountering the interstellar medium - or be pushed back into the relative vicinity of the supernova.
The team found that The dust survived the initial shock waves from the supernova event and continued "flowing into the interstellar medium where it can become part of the ... material for new stars and planets..."
Check out the complete NASA article HERE
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