[LibWhacker]

Not a dumb question. It’s a map in the gamma ray part of the EM spectrum. So visible light isn’t shown. The whole sky is represented as a globe (notice it goes from 90-degrees North to -90-degrees South, and 360-degrees latitudinally). What it shows is the shape and extent, or size, of the region of gamma ray emissions in our galaxy relative to the entire sky, with the Milky Way centered. There are other gamma-ray sources out there, of course. Don’t know why they chose not to represent at least a few of them on the map.

[RightWhale]

The Dec issue of Astronomy magazine has an interesting article about some non symmetry of the background microwave radiation that might indicate something such as that it is not way out there at the edge of the universe but right here in the solar system. Or not, but it’s another question about the universe, which is not turning out to be at all what has been expected.

[Condor51]

**** Not a dumb question. It’s a map in the gamma ray part of the EM spectrum. So visible light isn’t shown. The whole sky is represented as a globe (notice it goes from 90-degrees North to -90-degrees South, and 360-degrees latitudinally). What it shows is the shape and extent, or size, of the region of gamma ray emissions in our galaxy relative to the entire sky, with the Milky Way centered. ****

Thanks, I didn't think I was misreading the article.

**** There are other gamma-ray sources out there, of course. *****

That's for sure, like the Super Gamma Ray Bursts 'recently found' at the 'edges' of the (known) Universe. Not sure If I buy how 'they' twisted the findings to fit into E=mc². When I saw it on the Science Channel I really had to chuckle. With normal logic (and laws of physics) SGRBs blow E=mc² to hell.