沃尔夫-拉叶星124: 恒星风机器
A starfield is shown with a large spherical nebula in the center. The nebula shows a great deal of internal structure. Please see the explanation for more detailed information.
图中显示的是一片星空，中心有一个巨大的球形星云。星云显示出大量的内部结构。有关更多详细信息，请参阅说明。
LDN 1471: 恒星风造就的空穴
A starfield is dominated by light brown dust. In the middle is a parabolic gas cloud opening toward the lower right. A bright star is near the center at the apex of the parabolic gas cloud. Please see the explanation for more detailed information.
星空主要由浅棕色尘埃组成。中间是向右下方张开的抛物线气体云。抛物线气体云顶点中心附近有一颗明亮的恒星。有关更多详细信息，请参阅说明。
NGC 7635: 气泡星云
A starfield is shown with a big light bubble in the center. A bright star is toward the upper right in the translucent bubble. To some, the bubble may resemble a skull. Please see the explanation for more detailed information.
星空中央有一个明亮的大气泡。半透明的气泡右上方有一颗明亮的恒星。有些人觉得这个气泡像是一个骷髅。有关更多详细信息，请参阅说明。
SH2-308: 海豚头星云
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。
WR 134周围的星云
请参阅说明。单击图片将下载可用的最高分辨率版本。
RCW 58: 恒星风塑造的星云
2023年2月8日 Stellar Wind-Shaped Nebula RCW 58 Image Credit & Copyright: Mike Selby & Mark Hanson; Text: Natalia Lewandowska (SUNY Oswego) Explanation: Imagine traveling to a star about 100 times as massive as our Sun, a million times more luminous, and with 30 times the surface temperature. Such stars exist, and some are known as Wolf Rayet (WR) stars, named after French astronomers Charles Wolf and Georges Rayet. The central star in this image is WR 40 which is located toward the constellation of Carina. Stars like WR 40 live fast and die young in comparison with the Sun. They quickly exhaust their core hydrogen supply, move on to fusing heavier core elements, and expand while ejecting their outer layers via high stellar winds. In this…
SH2-308：海豚头星云
2021年10月21日 SH2-308: The Dolphin-Head Nebula Image Credit & Copyright: Nik Szymanek Explanation: Blown by fast winds from a hot, massive star, this cosmic bubble is huge. Cataloged as Sharpless 2-308 it lies some 5,000 light-years away toward the constellation of the Big Dog (Canis Major) and covers slightly more of the sky than a Full Moon. That corresponds to a diameter of 60 light-years at its estimated distance. The massive star that created the bubble, a Wolf-Rayet star, is the bright one near the center of the nebula. Wolf-Rayet stars have over 20 times the mass of the Sun and are thought to be in a brief, pre-supernova phase of massive star evolution. Fast winds from this Wolf-Rayet star create the bubble-shaped nebula as they…
NGC 6888: 蛾眉星云
2021年06月17日 NGC 6888: The Crescent Nebula Image Credit & Copyright: Joe Navara, Glenn Clouder, Russell Discombe Explanation: NGC 6888, also known as the Crescent Nebula, is a about 25 light-years across blown by winds from its central, bright, massive star. A triumvirate of astroimagers ( Joe, Glenn, Russell) created this sharp portrait of the cosmic bubble. Their telescopic collaboration collected over 30 hours of narrow band image data isolating light from hydrogen and oxygen atoms. The oxygen atoms produce the blue-green hue that seems to enshroud the detailed folds and filaments. Visible within the nebula, NGC 6888’s central star is classified as a Wolf-Rayet star (WR 136). The star is shedding its outer envelope in a strong stellar wind, ejecting the equivalent of the Sun’s…
气泡星云NGC 3199
2021年05月06日 Windblown NGC 3199 Image Credit & Copyright: Mike Selby and Roberto Colombari Explanation: NGC 3199 lies about 12,000 light-years away, a glowing cosmic cloud in the nautical southern constellation of Carina. The nebula is about 75 light-years across in this narrowband, false-color view. Though the deep image reveals a more or less complete bubble shape, it does look very lopsided with a much brighter edge along the top. Near the center is a Wolf-Rayet star, a massive, hot, short-lived star that generates an intense stellar wind. In fact, Wolf-Rayet stars are known to create nebulae with interesting shapes as their powerful winds sweep up surrounding interstellar material. In this case, the bright edge was thought to indicate a bow shock produced as the star…
LDN 1471：恒星风造就的空穴
2020 May 6 LDN 1471: A Windblown Star Cavity Image Credit: Hubble, NASA, ESA; Processing & License: Judy Schmidt Explanation: What is the cause of this unusual parabolic structure? This illuminated cavity, known as LDN 1471, was created by a newly forming star, seen as the bright source at the peak of the parabola. This protostar is experiencing a stellar outflow which is then interacting with the surrounding material in the Perseus Molecular Cloud, causing it to brighten. We see only one side of the cavity — the other side is hidden by dark dust. The parabolic shape is caused by the widening of the stellar-wind blown cavity over time. Two additional structures can also be seen either side of the protostar, these are known…