恒星珠宝盒

恒星珠宝盒

ByNASA中文

Thousands of sparkling young stars are nestled within the giant nebula NGC 3603, one of the most massive young star clusters in the Milky Way Galaxy. NGC 3603, a prominent star-forming region in the Carina spiral arm of the Milky Way about 20,000 light-years away, reveals stages in the life cycle of stars. Powerful ultraviolet radiation and fast winds from the bluest and hottest stars have blown a big bubble around the cluster. Moving into the surrounding nebula, this torrent of radiation sculpted the tall, dark stalks of dense gas, which are embedded in the walls of the nebula. These gaseous monoliths are a few light-years tall and point to the central cluster. The stalks may be incubators for new stars. On a smaller scale,…

哈勃拍摄了一个特殊的恒星苗圃

哈勃拍摄了一个特殊的恒星苗圃

ByNASA中文

This image, taken with the NASA/ESA Hubble Space Telescope, depicts a special class of star-forming nursery known as Free-floating Evaporating Gaseous Globules, or frEGGs for short. This object is formally known as J025157.5+600606. When a massive new star starts to shine while still within the cool molecular gas cloud from which it formed, its energetic radiation can ionize the cloud’s hydrogen and create a large, hot bubble of ionized gas. Amazingly, located within this bubble of hot gas around a nearby massive star are the frEGGs: dark compact globules of dust and gas, some of which are giving birth to low-mass stars. The boundary between the cool, dusty frEGG and the hot gas bubble is seen as the glowing purple/blue edges in this fascinating image….

幽灵星云

幽灵星云

ByNASA中文

The brightest stars embedded in nebulae throughout our galaxy pour out a torrent of radiation that eats into vast clouds of hydrogen gas – the raw material for building new stars. This etching process sculpts a fantasy landscape where human imagination can see all kinds of shapes and figures. This nebula in the constellation of Cassiopeia has flowing veils of gas and dust that have earned it the nickname “Ghost Nebula.” Officially known as IC 63, this nebula is located 550 light-years away in the constellation Cassiopeia the Queen. Image Credit: NASA, ESA, and STScI/Acknowledgment: H. Arab (University of Strasbourg) 嵌在我们整个银河系星云中的最亮的恒星会释放出一股辐射流，这些辐射流会吞噬巨大的氢气云，而氢气是形成新恒星的原材料。这种蚀刻工艺塑造了一个幻想的景观，在那里人类的想象力可以看到各种各样的形状和图形。这颗位于仙后座的星云有着流动的气体和尘埃的面纱，因此有了“幽灵星云”的绰号。 这个星云的官方名称是IC 63，位于550光年之外的仙后座女皇座。 图片来源：NASA，ESA和STScI /致谢：H. Arab（斯特拉斯堡大学）