The Earth

The days that could change Earth © Getty Images

The days that could change Earth

How far away is the horizon? © Getty Images

How far away is the horizon?

If you run east, are you running faster than if you run west? © Getty Images

Everyday science

If you run east, are you running faster than if you run west?

What would a death star do to Earth? © Getty Images

What would a death star do to Earth?

Could there be an unseen planet on the other side of the Sun? © Getty Images

Could there be an unseen planet on the other side of the Sun?

Beyond Earth, what's the most likely site of life? © iStock

Beyond Earth, what’s the most likely site of life?

What size Moon structure could we see from Earth? © Getty Images

What size Moon structure could we see from Earth?

Can we survive a solar storm? © Getty Images

Can we survive a solar storm?

Asteroid alert! © Getty Images

Asteroid alert!

How likely is it that the Sun will rise tomorrow? © Getty Images

How likely is it that the Sun will rise tomorrow?

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

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

Who named Earth? © Getty Images

Who named Earth?

Could the Earth ever flip over? © Getty Images

Could the Earth ever flip over?

Could life survive if the atmosphere disappeared? © Getty Images

Could life survive if the atmosphere disappeared?

Is there an easy way to prove the Earth is round? © Getty Images

Is there an easy way to prove the Earth is round?