Image: Spingola et al .; Bill Sexton, NRAO / AUI / NSF. (Others) When the universe was a billion years old, it was a galaxy Accelerated radiation, radiation, fast moving jets and plasma jets in the universe. About 13 billion years later, it is visible to humans in the form …
Read More »This is what our sky would look like if we could see a giant hello around Andromeda
The galaxies are already very large, with billions upon billions of stars orbiting supermassive black holes. But that’s not where their influence ends. The vast, spherical charge of gas surrounds the galaxy, reaching farther than the main population of stars, somewhat like the atmosphere of a galaxy. Hubble observations from …
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