Front

What are the two most abundant elements in the universe before the formation of stars?

Back

Hydrogen and helium.

Front

What shape do scientists believe the universe is?

Back

Sphere.

Front

How many years ago did the Big Bang occur according to common scientific consensus?

Back

Thirteen point seven billion years ago.

Front

What are the primary components of matter in the universe?

Back

Hydrogen, helium, and dark matter.

Front

What type of energy is theorized to be leftover from the Big Bang?

Back

Low level microwave energy.

Front

What is the Big Bang Theory?

Back

A scientific explanation for the origin of the universe, stating it began from a singularity and has been expanding ever since.

Front

What evidence supports the Big Bang Theory?

Back

Cosmic microwave background radiation and the redshift of distant galaxies.

Front

What is cosmic microwave background radiation?

Back

The afterglow radiation from the Big Bang, filling the universe.

Front

What does redshift indicate in astronomy?

Back

That an object in space is moving away from the observer, suggesting the universe is expanding.

Front

What is dark matter?

Back

A form of matter that does not emit light or energy, making it invisible and detectable only through its gravitational effects.