保护地球，探索宇宙，发现文明
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 ...
The life of a planetary nebula is often chaotic, from the death of its parent star to the scattering of its contents far out into space. Captured here by the NASA/ESA Hubble Space Telescope, ESO 455-10 is one such planetary nebula, located in the constellation of Scorpius (The Scorpion). The oblate shells of ESO 455-10, previously held tightly together as la...
Inside star cluster NGC 602, a star-forming region in the Small Magellanic Cloud, bright, blue, newly formed stars are blowing a cavity in this nebula,sculpting the inner edge of its outer portions, slowly eroding it away and eating into the material beyond. The diffuse outer reaches of the nebula prevent the energetic outflows from streaming away from the c...
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 t...
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 rad...
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 o...
This beautiful, blushing nebula is unique amongst its counterparts. While many of the nebulae visible in the night sky are emission nebulae — clouds of dust and gas that are hot enough to emit their own radiation and light — Caldwell 4, otherwise known as the Iris Nebula or NGC 7023, is a reflection nebula. This means that its color comes from the scattered ...
这组图片对来自各种太空探测任务和望远镜的不同种类的光的图像进行了组合，以更好地理解宇宙。每个合成图像都包含来自钱德拉X射线天文台（Chandra X-ray Observatory）的X射线数据和其他望远镜的数据。这些图片分别显示了一系列不同的天体，包括梅西耶82星系、阿贝尔2744星系团、超新星1987A、海山二星、车轮星系和螺旋星云。 来源：NASA / CXC / SAO，NASA /STScI，NASA /JPL-Caltech / SSC，ESO /NAOJ / NRAO，NRAO /AUI / NSF，NASA /CXC / SAO / PSU和NASA /ESA 人类可以通过全球范围内的望远镜和太空中的探测器探测到所有不同类型的光。从无线电波到伽玛射线，这种“多波长式”天文...
2020年8月6日 Messier 20 and 21 Image Credit & Copyright: Emanuele Petrilli Explanation: The beautiful Trifid Nebula, also known as Messier 20, is easy to find with a small telescope in the nebula rich constellation Sagittarius. About 5,000 light-years away, the colorful study in cosmic contrasts shares this well-composed, nearly 1 degree wide field with ope...
7月21日 Iron in the Butterfly Nebula Image Credit: NASA, ESA, Hubble; Processing & License: Judy Schmidt Explanation: Can stars, like caterpillars, transform themselves into butterflies? No, but in the case of the Butterfly Nebula — it sure looks like it. Though its wingspan covers over 3 light-years and its estimated surface temperature exceeds 200...