From somewhere else in the Milky Way galaxy, Comet 2I/Borisov was just visiting the Solar System. Discovered by amateur astronomer Gennady Borisov on August 30, 2019, the first known interstellar ...

In July 2025, astronomers identified an exceptionally rare interstellar comet currently speeding through our Solar System. The object has been designated 3I/ATLAS and is only the third confirmed ...

ハッブル宇宙望遠鏡の撮影画像を使ったムービーも公開されています。 Hubble's New Image of Interstellar Object - YouTube ...

オリオン座分子雲にある原始星とその周囲にある原始惑星系円盤をとらえた画像です。アルマ望遠鏡の画像（青）とアメリカにある電波望遠鏡カール・G・ジャンスキーVLA（Very Large Array）の画像（オレンジ）を重ね合わせたもので、青は円 ...

WASHINGTON (Reuters) - Scientists have discovered that a comet called 2I/Borisov - only the second interstellar object ever detected passing through the solar system - is surprisingly different in ...