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  The galaxy Messier 101 is a swirling spiral of stars

  The galaxy Messier 101 is a swirling spiral of stars, gas, and dust. Messier 101 is nearly twice as wide as our Milky Way galaxy. Spitzer‘s view, taken in infrared light, reveals the galaxy‘s delicate dust lanes as yellow-green filaments. Such dense dust clouds are where new stars can form. In this image, dust warmed by the light of hot, young stars glows red. The rest of the galaxy‘s hundreds of billions of stars are less prominent and form a blue haze. Astronomers can use infrared light to examine the dust clouds where stars are born.、クレジット：Ｗｏｒｌｄ　Ｈｉｓｔｏｒｙ　Ａｒｃｈｉｖｅ／ニューズコム／共同通信イメージズ　※エディトリアル使用のみ。広告、プロモーション、商業目的での利用に関してはお問合せください。

  商品コード: 2019022103724

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  2003年12月19日

  Ｍ８１ 遠くの天体も鮮明に撮影

  宇宙赤外線望遠鏡で観測したおおぐま座の渦巻き銀河Ｍ８１（ＮＡＳＡ提供）

  商品コード: 2003121900052

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  2019年10月30日

  Hubble Finds Medusa in the Sky Snakes and Stones

  The galaxy pictured in this Hubble Picture of the Week has an especially evocative name: the Medusa merger.  Often referred to by its somewhat drier New General Catalogue designation of NGC 4194, this was not always one entity, but two. An early galaxy consumed a smaller gas-rich system, throwing out streams of stars and dust out into space. These streams, seen rising from the top of the merger galaxy, resembles the writhing snakes that Medusa, a monster in ancient Greek mythology, famously had on her head in place of hair, lending the object its intriguing name. All the cool gas pooling here has triggered a burst of star formation, causing it to stand out brightly against the dark cosmic backdrop. The Medusa merger is located about 130 million light-years away in the constellation of Ursa Major (The Great Bear). NASA/UPI Photo via Newscom、クレジット：ＮＡＳＡ／ＵＰＩ／ニューズコム／共同通信イメージズ

  商品コード: 2019110100231