Have humans ever been to the moon?
Yes, they have.
Have humans ever been to Mars?
No, they haven't
When did the first person land on the moon?
In 1969.
Has a robot ever been to Mars?
Yes, it has.
The first person to go to space was Yuri Gagarin. Where was he from?
He was from Russia.
Which is bigger, Jupiter or Mercury?
Jupiter is bigger than Mercury.
Which is nearer to the Sun, Saturn or Mercury?
Mercury is nearer to the Sun.
Which is further from the Sun, Venus or Uranus?
Uranus is further from the Sun.
Which is smaller, the moon or Saturn?
The moon is smaller than Saturn.
Has anyone ever seen Venus from Earth?
Yes, they have.
Which is the hottest planet?
The hottest planet is Venus with an average temperature of 460°C.
Which is the coldest planet?
The coldest planet is Uranus with an average temperature -220°C.
