67P SHAPED BY A COL­LI­SION

Sky at Night Magazine - - BULLETIN -

The lat­est sim­u­la­tions have shown that 67P/ Churyu­mov-Gerasi­menko, the dou­ble-lobed comet vis­ited by the Rosetta mis­sion from 2014-16, could be the re­sult of a high-speed crash. The sim­u­la­tions show that when comets col­lide, only a small amount of ma­te­rial is va­por­ised. The rest re­mains in large enough pieces to clump back to­gether and form a new comet within a few days. High-speed col­li­sions are more com­mon in the cur­rent So­lar Sys­tem, so 67P could have con­joined rel­a­tively re­cently.

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