Author Question: Observing the galaxy at radio wavelengths allows us to see beyond the dust in the disk of the galaxy ... (Read 22 times)

yoooooman · **on:** Jul 27, 2018

Observing the galaxy at radio wavelengths allows us to see beyond the dust in the disk of the galaxy that obscures our view.

Indicate whether the statement is true or false

Question 2

If the Sun were replaced by a one solar mass black hole

A) all terrestrial planets would fall in immediately.
B) we would still orbit it in a period of one year.
C) we would immediately escape into deep space, driven out by its radiation.
D) our clocks would all stop.
E) life here would be unchanged.