蟹状星云

Crab nebula───蟹状星云

spiral nebula───[天]旋涡星云

spiral nebulae───[天]旋涡星云

spiral nebulas───[天]旋涡星云

dark nebula───[天]暗星云

trabecula───n.[解剖]小梁，桁，柱；骨小梁；[植]横隔片；菌褶原；[古生]羽榍

Orion Nebula───[天]猎户座星云；[天]猎户星云

dark nebulae───[天]暗星云

dark nebulas───[天]暗星云

stroboscopic picture, a stroboscopic exposure was made of the center portion of the Crab Nebula.───闪观测仪的图，对蟹状星云的中心，进行频闪观测曝光。

And here you see the Crab Nebula.───这是蟹状星云。

Its remnants form the Crab Nebula.───它的残余物组成了蟹状星云.

The Crab Nebula is at a distance from us of about 5,000 light-years.───蟹状星云距离我们，大概是5000光年。

The Crab Nebula lies about 6, 500 light - years away in the constellation Taurus.───蟹状星云距离金牛座大约6, 500 光年 远.

The Crab Nebula is the brightest source of reasonably steady high-energy radiation (X-rays and gamma rays) in the sky.

Astrophysicists have long thought of the Crab Nebula as a steady "standard candle" in X-ray wavelengths.

The remnants today are seen as Crab Nebula.

An unexpectedly varying Crab Nebula might have affected any research that used the Crab as a standard or a calibration tool.

Its remnants form the Crab Nebula.

And here you see the Crab Nebula.

Explanation: The Crab Nebula is cataloged as M1, the first object on Charles Messier 's famous list of things which are not comets.

I want to show you the Crab Nebula, and I think I will also show you the beautiful flywheels in the Magnet Lab.

This composite image of the Crab Nebula combines a Chandra X-ray image in light blue with the Spitzer Space Telescope infrared image in red and Hubble Space Telescope’s optical image.