Science
Quasars: how to feed a supermassive black hole – Big Think
A new model addresses a longstanding problem: where do quasars get the fuel they need to outshine entire galaxies?
It is called the “Great Unconformity,” and it has puzzled geologists ever since it was first noticed in the walls of the Grand Canyon by famed geologist John Wesley Powell in 1869. In geology, time is marked by layers of rock deposited atop each other,…
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