The Earth

Snowball Earth evidence points to volcanoes © Getty Images

Snowball Earth evidence points to volcanoes

What time zones are used at the North Pole and South Pole? © Getty Images

What time zones are used at the North Pole and South Pole?

The thought experiment: What would happen if the Earth stopped spinning?

The thought experiment: What would happen if the Earth stopped spinning?

Is there acid snow (like acid rain)? © Getty Images

Is there acid snow (like acid rain)?

How old is water? © Getty Images

How old is water?

What are the chances of being hit by falling space junk? © Getty Images

What are the chances of being hit by falling space junk?

What is tidal locking? © Getty Images

What is tidal locking?

Has Earth ever had more than one moon? © iStock

What would happen to Earth’s orbit if the Sun vanished?

Will Earth’s interior ever become solid? © Getty Images

Will Earth’s interior ever become solid?

Will I weigh less if I move to the equator? © iStock

Will I weigh less if I move to the equator?

Who really discovered the North Pole? © Getty Images

Who really discovered the North Pole?

© NASA

Could an asteroid knock Earth out of its orbit?

Top 10: What are the longest lasting landfill items? © Getty Images

Top 10: What are the longest lasting landfill items?

Why hasn’t intelligent alien life found us? © Getty Images

Why hasn’t intelligent alien life found us?

How did the Moon form? © iStock

How did the Moon form?