哈勃太空望远镜
#OTD in 1994, Comet Shoemaker-Levy 9 began to rain down on the planet Jupiter. The comet broke into 21 fragments, and Hubble captured the impacts. This monumental first viewing of an interplanetary impact in our solar system taught astronomers more about Jupiter, comets, and the science of impacts – and played a role in NASA developing programs to address impact risk to Earth. Image description: Four stacked views of Jupiter, from bottom to top: 1) Jupiter with a puff of bright light near its limb. 2) The deep maroon scar of the impact is visible against the stripes of Jupiter's clouds. 3) The impact scar is larger with two distinct regions. 4) The impact scar is becoming more diffuse. Image credit: Evans, J. Trauger, H. Hammel and the HST Comet Science Team, and NASA #NASA #Hubble #OnThisDay #comet #Jupiter #planet #space #history #universe
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