Astronomy and Planetary Science Quiz

Which of the following theories is the most widely accepted explanation for the origin of the universe?

• Steady-state theory

• Big Bang theory

• Pulsating universe theory

• Oscillating universe theory

What evidence supports the Big Bang theory?

• The red shift of distant galaxies

• The abundance of light elements in the universe

• The existence of the CMB

• All of the above

What is our solar system's position in the Milky Way Galaxy?

• In the central bulge

• In the spiral arms

• In the outer disk

• In the galactic halo

What is the shape of the Milky Way Galaxy?

• A spiral galaxy

• An elliptical galaxy

• An irregular galaxy

• A dwarf galaxy

How many galaxies are there in the observable universe?

• About 200 billion

• About 2 trillion

• About 20 trillion

• About 200 trillion

What is the observable universe?

• The entire universe

• The part of the universe that we can see with our telescopes

• The part of the universe that we can reach with spacecraft

• The part of the universe that we can understand with our current theories

What is the ultimate fate of the universe?

• It will continue to expand forever.

• It will eventually collapse in on itself.

• It will continue to expand and then recollapse in a cyclical process.

• It is unknown.

Which planet is closest to the Sun?

• Mercury

• Venus

• Earth

• Mars

Which planet is the largest in the solar system?

• Jupiter

• Saturn

• Uranus

• Neptune

Which planet is the most Earth-like?

• Mars

• Venus

• Titan

• Europa