While our Milky Way's black hole is not massive enough to have once been quasar, it must have passed through its Seyfert phase by 3.5 billion years ago. Explain how we know this
What will be an ideal response?
We are here. Life on Earth would have been destroyed by the violent activity of an active nucleus only 30,000 light years away, in the core of our own galaxy, yet the fossil record tells us life has persisted on Earth uninterrupted for at least 3.5 billion years.
You might also like to view...
Where will you find a cinder cone volcano?
What will be an ideal response?
Explain how rotation and magnetic fields influence the formation of the protostar
What will be an ideal response?
Without the strong nuclear force, the only element in the universe would be ________. Explain
Fill in the blank(s) with correct word
The Fort Lonesome and Terre Haute gasification plants were subsidized with public money. According to one observer quoted in Ref. 219, the company would have built the plant in any case
Was this a good or poor use of public money? Try to argue both sides.