金牛座的年轻恒星与暗星云
See Explanation. Clicking on the picture will download the highest resolution version available.
请参阅说明。单击图片将下载可用的最高分辨率版本。
亮、暗与尘埃飞扬的三叶星云
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暗饰带星云
A busy starfield is shown which an elongated brown nebula running diagonally from the lower left to the upper right. A bright blue star and a star cluster appear above the nebula. Please see the explanation for more detailed information.
画面中是一片繁忙的星空，一团细长的棕色星云从左下角斜向右上方。星云上方出现一颗明亮的蓝色恒星和一个星团。有关更多详细信息，请参阅说明。
LBN 86: 鹰魟星云
2023年11月27日 LBN 86: The Eagle Ray Nebula Image Credit & Copyright: Vikas Chander Explanation: This eagle ray glides across a cosmic sea. Officially cataloged as SH2-63 and LBN 86, the dark nebula is composed of gas and dust that just happens to appear shaped like a common ocean fish. The interstellar dust nebula appears light brown as it blocks and reddens visible light emitted behind it. Dark nebulas glow primarily in infrared light, but also reflect visible light from surrounding stars. The dust in dark nebulas is usually sub-millimeter chunks of carbon, silicon, and oxygen, frequently coated with frozen carbon monoxide and nitrogen. Dark nebulas are also known as molecular clouds because they also contain relatively high amounts of molecular hydrogen and larger molecules. Previously…
南冕座的恒星和尘埃
2023年6月22日 Stars and Dust across Corona Australis Image Credit & Copyright: Alessandro Cipolat Bares Explanation: Cosmic dust clouds cross a rich field of stars in this telescopic vista near the northern boundary of Corona Australis, the Southern Crown. Part of a sprawling molecular cloud complex this star forming region is a mere 500 light-years away. That’s about one third the distance of the more famous stellar nursery known as the Orion Nebula. The 2 degree wide frame would span 15 light-years at the clouds’ estimated distance. Mixed with bright nebulosities the dust clouds effectively block light from more distant background stars in the Milky Way and obscure from view embedded stars still in the process of formation. Large dark nebula Bernes 157 is on the…
NGC 4372与暗带星云
2023年3月30日 NGC 4372 and the Dark Doodad Image Credit & Copyright: Matias Tomasello Explanation: The delightful Dark Doodad Nebula drifts through southern skies, a tantalizing target for binoculars toward the small constellation Musca, The Fly. The dusty cosmic cloud is seen against rich starfields just south of the Coalsack Nebula and the Southern Cross. Stretching for about 3 degrees across the center of this telephoto field of view, the Dark Doodad is punctuated near its southern tip (upper right) by yellowish globular star cluster NGC 4372. Of course NGC 4372 roams the halo of our Milky Way Galaxy, a background object some 20,000 light-years away and only by chance along our line-of-sight to the Dark Doodad. The Dark Doodad’s well defined silhouette belongs to the…
LDN 673: 天鹰座的暗星云
2022年10月29日 LDN 673: Dark Clouds in Aquila Image Credit & Copyright: Frank Sackenheim, Josef Poepsel, Stefan Binnewies (Capella Observatory Team) Explanation: Part of a dark expanse that splits the crowded plane of our Milky Way galaxy, the Aquila Rift arcs through planet Earth’s skies near bright star Altair. In eerie silhouette against the Milky Way’s faint starlight, its dusty molecular clouds likely contain raw material to form hundreds of thousands of stars and astronomers search the dark clouds for telltale signs of star birth. This telescopic close-up looks toward the region at a fragmented Aquila dark cloud complex identified as LDN 673, stretching across a field of view slightly wider than the full moon. In the scene, visible indications of energetic outflows associated with young…
美丽的三叶星云
2022年8月5日 A Beautiful Trifid Image Credit & Copyright: Vikas Chander Explanation: The beautiful Trifid Nebula is a cosmic study in contrasts. Also known as M20, it lies about 5,000 light-years away toward the nebula rich constellation Sagittarius. A star forming region in the plane of our galaxy, the Trifid does illustrate three different types of astronomical nebulae; red emission nebulae dominated by light from hydrogen atoms, blue reflection nebulae produced by dust reflecting starlight, and dark nebulae where dense dust clouds appear in silhouette. But the red emission region, roughly separated into three parts by obscuring dust lanes, is what lends the Trifid its popular name. Pillars and jets sculpted by newborn stars, above and right of the emission nebula’s center, appear in famous Hubble…