NGC 7662 - Wikipedia
NGC 7662 is a planetary nebula located in the northern constellation Andromeda. It is known as the Blue Snowball Nebula, Snowball Nebula, and Caldwell 22. This nebula was discovered October 6, 1784 by the German-born English astronomer William Herschel.
Caldwell 22 - Science@NASA
Caldwell 22 (C22), also cataloged as NGC 7662 and nicknamed the Snowball Nebula or Blue Snowball Nebula, is a planetary nebula located about 2,500 light-years from Earth. Nebulae like these represent a stage in evolution that stars like our Sun undergo when they run out of fuel. Stars are nuclear furnaces that spend most of their lives fusing ...
Hubble's Nebulae - Science@NASA
The rapidly spinning neutron star embedded in the center of the nebula is the dynamo powering the nebula's eerie interior bluish glow. The blue light comes from electrons whirling at nearly the speed of light around magnetic field lines from the neutron star, which is the crushed, ultra-dense core of the exploded star.
16年之谜！科学家揭开蓝色星云神秘面纱：一颗类太阳恒星吞噬较 …
2020年11月19日 · 这颗Blue Nebula是由NASA的太空星系演化探测器(GALEX)在16年前发现的，科学家称它“与我们银河系之前所见的任何东西都不一样”。 图像显示了一个巨大而微弱的气体团，中心有一颗恒星明亮地闪烁着。
Welcome to Blue Nebula
2021年6月13日 · Welcome to Blue Nebula. Blue Nebula is a fast-paced shooter featuring a unique parkour system. It is a fork of Red Eclipse and is free software. Download the game. We provide official binaries on our Release page for Linux (AppImage), Windows and macOS (.zip archives). Try Blue Nebula today! Get in touch. We provide an official IRC channel.
Reflection nebula - Wikipedia
Reflection nebula are usually blue because the scattering is more efficient for blue light than red (this is the same scattering process that gives us blue skies and red sunsets). Reflection nebulae and emission nebulae are often seen together and are sometimes both referred to …
See New Images of the Horsehead Nebula, Captured in Striking …
2024年5月1日 · Its billowing mane of gaseous plumes is illuminated by some of the celestial hunter’s brightest stars. This week, new infrared images captured by NASA’s James Webb Space Telescope show this ...
A blue ring nebula from a stellar merger several thousand years ago
2020年11月18日 · Here we report observations of an unusual, ring-shaped ultraviolet (‘blue’) nebula and the star at its centre, TYC 2597-735-1. The nebula has two opposing fronts, suggesting a bipolar outflow...
Astronomers say they've solved the mystery of the ‘Blue Ring Nebula'
2020年11月18日 · Astronomers believe they have solved the 16-year-old mystery of a star surrounded by an enigmatic ring of ultraviolet light. If they're right, the "Blue Ring Nebula" offers a glimpse of a fleeting phenomenon: a star still reeling from its …
16-Year-Old Cosmic Mystery Solved, Revealing Stellar Missing Link
2020年11月18日 · The Blue Ring Nebula, which perplexed scientists for over a decade, appears to be the youngest known example of two stars merged into one. In 2004, scientists with NASA’s space-based Galaxy Evolution Explorer (GALEX) spotted an object unlike any they’d seen before in our Milky Way galaxy: a large, faint blob of gas with a star at its center.