This massive ‘bouquet’ is actually where stars have been born for 25 million years
A nebula that neighbors the Milky Way galaxy happens to be a powerhouse of forging stars, "a bouquet of thousands of stars in ...
来自MSN2 个月
NASA images: Tour the universe with these 5 mind-blowing photos from space
optical data from Hubble (purple), and infrared data from Spitzer (pink). Crab Nebula has been constantly observed by Chandra telescope which was launched into space in 1999. The Crab Nebula is ...