Which is the smallest planet of the solar system?
Mercury
Which planet is the closest to the Sun?
Mercury
Does Mercury spin around the Sun slower or faster than the Earth?
Faster. Mercury has the fastest rotation
Which is the only star in our solar system?
The Sun
Which is the hottest planet of the Solar System?
Venus, because it has a very dense atmosphere.
Where is there more gravity: on Earth or on the Moon?
On Earth. There is less gravity on the Moon, so you have to jump in order to walk
Which is smaller: Mars or Earth?
Mars
Is the moon getting closer to or further away from the Earth?
Further away
Which planet is nearer the Sun: Mars or Venus?
Venus
Which planet is the coldest?
Neptune, because it is the farthest from the Sun
Which is bigger. Saturn or Jupiter?
Jupiter
Which is the planet with the fastest rotation?
Jupiter, a day is only 10 hours
Which is the planet with the slowest rotation?
Venus
Which planet is almost the same size as our planet?
Venus
Which planet spins vertically and has DARK (not brillant) rings?
Uranus
Which is the second biggest planet?
Saturn
