The universe
The Big Bang happened 14 billion years ago.
When did the Big Bang happen?
Challenger exploded in the atmosphere (at an altitude of 14 kilometres).
Where did Challenger explode?
Neil Armstrong was the first man to walk on the Moon.
Who was Neil Armstrong?
Saturn V was the most powerful rocket in history.
What was the most powerful rocket in history?
The Earth is 8 light-minutes away from the Earth.
How far is the Earth from the Sun?
What is the distance between the Earth and the Sun?
Yuri Gagarin was the first man in space.
Who was the first man in space?
No, Thomas Pesquet didn't eat crisps in space.
Did Thomas Pesquet eat crisps in space?
ISS stands for "International Space Station".
What does ISS stand for?
There were 9 planets in the solar system before 2006.
How many planets were there in the solar system before 2006?
Columbia disintegrated upon reentry in the atmosphere in 2003 because the left wing was damaged.
Why did Columbia disintegrate upon reentry in the atmosphere?
Laika went to space in November 1957.
When did Laika go to space?
100 people died in China because a rocket crashed on a village after launch.
Why did 100 people die in China?
Yes, Pluto lost its planet status in 2006.
Did Pluto lose its planet status in 2006?
Galileo first saw Jupiter's moons in 1610.
When did Galileo first see Jupiter's moons?
Yuri Gagarin's first spaceflight was 1h48m long.
How long was Yuri Gagarin's first spaceflight?
Voyager 2 (a space probe) travelled 18 billion kilometres before leaving the Solar System.
How far did Voyager 2 travel before leaving the Solar System?