I’m working on a business discussion question and need support to help me learn.

1) The source of energy that keeps the Sun shining today is 

A) chemical reactions 

B) nuclear fission

C) gravitational contraction 

D) nuclear fusion

2) If we could see our own galaxy from 2 million light-years away, it would appear 

A) to fill the sky with widely spaced stars

B) like a single, dim star

C) as a faintly glowing band of light stretching all the way around the sky

D) as a flattened disk with a central bulge and spiral arms

3) The Sun’s location in the Milky Way Galaxy is 

A) very near the galactic center

B) at the very outer edge of the galactic disk

C) in the galactic disk, roughly halfway between the center and the outer edge of the disk

D) in the halo of the galaxy, about 28,000 light-years above the galactic disk

4) What do we mean by the interstellar medium?

A) the dust that fills the halo of the Milky Way galaxy

B) the middle section of the Milky Way galaxy

C) the gas and dust that lie in between the stars in the Milky Way galaxy

D) the name of an oracle who can channel messages from beings that live near the star called Vega