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Παρασκευή 23 Αυγούστου 2024

Astronomy Picture of the Day: Fermi's 12-year All-Sky Gamma-ray Map

 


#NASA,#Xray vision,#gamma_ray #FermiGamma_ray_SpaceTelescope

Explanation: Forget X-ray vision — imagine what you could see with gamma-ray vision! The featured all-sky map shows what the universe looks like to NASA's Fermi Gamma-ray Space Telescope. Fermi sees light with energies about a billion times what the human eye can see, and the map combines 12 years of Fermi observations. The colors represent the brightness of the gamma-ray sources, with brighter sources appearing lighter in color. The prominent stripe across the middle is the central plane of our Milky Way galaxy. Most of the red and yellow dots scattered above and below the Milky Way’s plane are very distant galaxies, while most of those within the plane are nearby pulsars. The blue background that fills the image is the diffuse glow of gamma-rays from distant sources that are too dim to be detected individually. Some gamma-ray sources remain unidentified and topics of research — currently no one

https://apod.nasa.gov/apod/ap240821.html

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