「原始惑星状星雲」の写真・グラフィックス・映像
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2021年02月10日The Coalsack NebulaFebruary 10, 2021, Deep Space: On the edge of the inky Coalsack Nebula, or Caldwell 99, a dark nebula: a dense cloud of interstellar dust that completely blocks out visible wavelengths of light from objects behind it. The object at the center of the image is a (much smaller) protoplanetary nebula. The protoplanetary nebula phase is a late stage in the life of a star in which it has ejected a shell of hydrogen gas and is quickly heating up. This stage only lasts for a few thousand years before the protoplanetary nebula‘s central star reaches roughly 30,000 Kelvin (approximately 17,000 degrees Fahrenheit). (Credit Image: © NASA/ZUMA Wire/ZUMAPRESS.com)、クレジット：©ＮＡＳＡ／ＺＵＭＡ Ｗｉｒｅ／ＺＵＭＡＰＲＥＳＳ．ｃｏｍ／共同通信イメージズ
商品コード: 2021021800807
2021年02月10日The Coalsack NebulaFebruary 10, 2021 - Space - This stunning image captures a small region on the edge of the inky Coalsack Nebula, or Caldwell 99. Caldwell 99 is a dark nebula, a dense cloud of interstellar dust that completely blocks out visible wavelengths of light from objects behind it. The object at the center of the image is a (much smaller) protoplanetary nebula. The protoplanetary nebula phase is a late stage in the life of a star in which it has ejected a shell of hydrogen gas and is quickly heating up. This stage only lasts for a few thousand years before the protoplanetary nebula‘s central star reaches roughly 30,000 Kelvin (approximately 17,000 degrees Fahrenheit). At this point, the central star is producing enough energy to make its surrounding shell of gas glow, becoming what‘s known as a planetary nebula. (Credit Image: © NASA/ZUMA Wire/ZUMAPRESS.com)、クレジット：©ＮＡＳＡ／ＺＵＭＡ Ｗｉｒｅ／ＺＵＭＡＰＲＥＳＳ．ｃｏｍ／共同通信イメージズ
商品コード: 2021021711553
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