Space

How does a laser beam measure the distance to the Moon so accurately? © Getty Images

How does a laser beam measure the distance to the Moon so accurately?

What is the Universe made of? © Getty Images

What is the Universe made of?

Why does the fusion of hydrogen in stars release energy? © Getty Images

Why does the fusion of hydrogen in stars release energy?

Can you blow bubbles in space? © Getty Images

Can you blow bubbles in space?

Could we use the Sun to 'slingshot' spacecraft to the stars? © Getty Images

Could we use the Sun to ‘slingshot’ spacecraft to the stars?

Could Neptune and Pluto ever collide, as their orbits intersect? © iStock

Could Neptune and Pluto ever collide, as their orbits intersect?

How far apart are the Sun, Moon and Earth during eclipses? © Getty Images

How far apart are the Sun, Moon and Earth during eclipses?

How long will the International Space Station be habitable? © Getty Images

How long will the International Space Station be habitable?

What tech would the Apollo 11 mission have today? © NASA

What tech would the Apollo 11 mission have today?

How do you pee in zero G? © Getty Images

How do you pee in zero G?

How long does it take the Sun to orbit the galaxy? © Getty Images

How long does it take the Sun to orbit the galaxy?

Why can gravity escape a black hole but not light? © iStock

Why can gravity escape a black hole but not light?

Could the Earth ever flip over? © Getty Images

Could the Earth ever flip over?

Where did the Big Bang take place? © Getty Images

Where did the Big Bang take place?

How cold is it in space? © Getty Images

How cold is it in space?