Hey You! What If...

Experience the most extraordinary ride in the universe – falling into a black hole.

The deepest hole humankind ever dug only got one thousandth of the way through the earth. But what would happen if you kept digging?

What would happen if there really was a lift that took you all the way up to space?

Find out why turning into a huge giant would be no fairy tale.

Experience the ultimate in long-distance travel - a holiday on Mars!

Good news - it’s possible to levitate! Bad news – there are some serious side effects.