NASAのインスタグラム(nasagoddard) - 11月29日 04時33分

Where did Comet ISON come from? What does it look like? -- Comet ISON was 'born' in the Oort Cloud, the purple mass, more than 4 billion years ago when the original solar system was born. This NASA visualization illustrates #ISON as it hurles thru space.
Credit: NASA/Goddard #nasagoddard #cometison #ison #willitbreakup #oortcloud #sun

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