Solar System

The body or organisation that is responsible for studying the behavior of celestial objects including planets is the

• IAA

• AIU

• IAU

• UIA

Which of these is not a part of the Terrestrial or Inner planets?

• Saturn

• Venus

• Mars

• Mercury

The planet, Pluto, is no longer considered to be part of the major planets in our solar system because it

• is rectangular in shape

• occasionally abandons its orbit while in circulation of the Sun

• has failed to clear its surrounding of small objects like itself

• It is way too far from the sun

Our Solar system is part of a galaxy called

Why is Mercury, being the closest planet to the sun, not the hottest? It is due to

• Its relatively small size

• lack of Carbon dioxide and other greenhouse gases in its atmosphere

• traveling really fast in orbit than the other planets

• None of the above

The temperature of the Sun on its surface alone is so hot that it measures

• 50°C

• 500°C

• 5500°C

• 10000°C

A combination of several galaxies that each contain several separate solar systems make up the

Our Sun is the largest and hottest of suns in the entire universe.

• Yes, it is. Very true

• Of course not. It's False

• I have no idea

Which of these heavenly bodies is known to occupy the gap that exist between the inner and outer planets of our solar system?

• Comets

• Meteorites

• Asteroids

• Nothing. It's just empty

The outer planets that are otherwise called Jovian planets are

• planets that move in orbit round the Sun

• planets that have their own moons as a satellite

• planets that are found in a different solar system separate from ours

• planets that come right after the asteroid belt