EARTH SCI

NOTE: Start with capital letters.

It has gravity but does not emit light.

NOTE: Start with capital letters.

It's a source of anti-gravity.

NOTE: Start with capital letters.

These are the building block of galaxies.

How old is the universe?

• 13.8 billion years old

• 13.8 million years old

What should be the diameter of the universe?

• 91 billion light-years

• 91 million light-years

Who discovered redshift?

NOTE: Start with a small letter.

It's the interpretation that galaxies are moving away from each other, hence as evidence for an expanding universe.

It maintains that new matter is created as the universe expands thereby maintaining its density. Its predictions led to tests and its eventual rejection with the discovery of the cosmic microwave background.

• Steady State Model

• Big Bang Theory

It where the universe expanded from a tiny, dense and
hot mass to its present size and much cooler state.

• Steady State Model

• Big Bang Theory

Who studied Nebular Hypothesis?

• Emanuel Swedenborg

• Immanuel Kant

• Pierre-Simon Laplace

• Edwin Hubble