Astronomy Cosmology and Deep Space 3

Question 1

What is a light-year a measure of?

Accepted Answer

Distance

Answer

Time

Answer

Brightness

Answer

Temperature

Question 2

Which type of galaxy is the Milky Way classified as?

Accepted Answer

Spiral galaxy

Answer

Elliptical galaxy

Answer

Irregular galaxy

Answer

Lenticular galaxy

Question 3

Dark matter is inferred to exist primarily because of its effect on:

Accepted Answer

The rotation and motion of galaxies

Answer

The color of stars

Answer

The taste of interstellar gas

Answer

Radio broadcasts from Earth

Question 4

The nearest major galaxy to the Milky Way is:

Accepted Answer

Andromeda

Answer

The Large Magellanic Cloud's core

Answer

Whirlpool Galaxy

Answer

Sombrero Galaxy

Question 5

What cosmic structure is a vast, mostly empty region between galaxy filaments?

Accepted Answer

A void

Answer

A quasar

Answer

A supernova remnant

Answer

An accretion disk

Question 6

The observable universe is finite mainly because:

Accepted Answer

Light has only had a finite time to reach us

Answer

Space physically ends at a wall

Answer

Telescopes are too weak

Answer

The universe is very small

Question 7

A quasar is powered by what?

Accepted Answer

A supermassive black hole accreting matter

Answer

Nuclear fusion in a single giant star

Answer

Colliding comets

Answer

Reflected galactic light