False-color image of an all-sky HI (neutral hydrogen) survey. The bright band across the center represents the plane of our Milky Way galaxy, showing vast clouds of hydrogen gas tens to hundreds of light-years across. These structures are shaped by stellar activity within the galactic disk. The image is based on radio wave emissions from hydrogen atoms at a wavelength of 21 centimeters.
Astronomy Picture from 13/01/2001
A Sky Full Of Hydrogen
Source: https://apod.nasa.gov/apod/ap010113.html
#HI21cm #RadioAstronomy #MilkyWay #InterstellarMedium #NeutralHydrogen #SpaceGas #AstronomyImage #Astrophysics #GalaxyMap #AllSkySurvey