Answers to Physics Questions

What's so special about the size of the Earth that makes life more likely?

Would a mirror lightyears away in space show us our planet's ancient history?

How do we get back to earth from the moon?

What's the difference between a US and a UK billion?

Why don't lightning strikes on the ocean kill marine life?

Seeing as Earth is just right for life, does that make hunting for ET futile?

If pi just keeps going, how do we keep finding more numbers?

Can we make gravity by spinning a spaceship?

Is a spacewalk really a big deal?

If you started counting when you were born, what number would reach before you died?

Why don't compasses point to East or West?

What would have happened if Neil Armstrong had taken one giant leak for mankind?

...and where does the sky end?

Normally, when stuff collides, things fly apart from each other. So how did planets form in the first place?

If sheets rubbing together can cause static, could this start a fire?

Seats are weighty, but would it make much of a saving?

Theoretically, there many be many universes but why do we think this?

Soaps come in a variety of colours yet the bubbles are always white. Why?