What percentage is the Sun compared to the total mass of the solar system?

• 75%

• 99.9%

• 50%

• 25%

Why does Venus rotate backwards or have retrograde rotation?

• It was formed that way

• The Sun's gravity pulls it backwards

• A massive meteorite crashed into it

• It rotates on its side like Uranus

Which of Saturn's moons has a number of geysers located at its south pole that are very similar to the ones on Earth.

• Enceladus

• Europa

• Ganemede

• Titan

Which are the only 2 planets in our solar system that have no moons.

• Mercury and Venus

• Pluto and Mercury

• All planets have moons

• Venus and Uranus

The distance light travels in a year, 9.46 trillion kilometers.

Pluto is a dwarf planet that is smaller than which country?

• Mexico

• Israel

• United States

• San Marino

There is no air in outer space. The molecules are few and far between. This means you will not be able to

• hear sound in outer space

• move on your own in outer space

• see in outer space

• eat food in outer space

A white hole is a hypothetical region of space-time which can’t be entered from the outside, although matter and light can escape from within. Basically, it’s the reverse of a black hole.

• True

• False

We always see the same side of the Moon, no matter where we stand on Earth. This is because the Moon rotates on its axis at the same rate that it rotates the Earth. This is called?

• asynchronous rotation or tital bulging

• stationary moon phenomenon

• synchronous rotation or tidal locking.

• moon phases

Which was the first commercial soft drink that was ever consumed in space.

• Pepsi

• Coca cola

• Tang

• Dr. Pepper