Hey You! What If...

S01E01 2 Mar 20

5m

You Fell Into a Black Hole?

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

S01E02 3 Mar 20

5m

You Could Dig Through the Earth?

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

S01E03 4 Mar 20

5m

You Could Take a Lift to Space?

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

S01E04 5 Mar 20

5m

You Could Turn into a Giant?

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

S01E05 6 Mar 20

5m

You Could Go on Holiday to Mars?

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

S01E06 9 Mar 20

5m

You Could Levitate?

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

S01E07 10 Mar 20

5m

Clouds Were Made Out of Cotton Wool?

Clouds might look like cotton wool, but if they were, things would get very messy.

S01E08 11 Mar 20

5m

The Earth Stopped Spinning?

Find out why stopping the Earth from spinning isn’t such a good idea.

S01E09 12 Mar 20

5m

The Moon Was Made of Cheese?

Things don’t quite go to plan when the moon turns into cheese.

S01E10 13 Mar 20

5m

The Earth Was Flat?

Find out why a flat Earth would feel very unflat indeed!

S01E11 16 Mar 20

5m

We Could Actually Stop Climate Change?

The planet is being destroyed - but this episode demonstrates the things you can do to help save it.

S01E12 17 Mar 20

5m

You Can't Wait for Christmas?

It really is possible to time travel into the future, and the team show you how!

S01E13 18 Mar 20

5m

You Could Shrink Yourself?

If you have always wanted to shrink yourself, this is the episode for you!

S01E14 19 Mar 20

5m

You Could Live on the Moon?

Some day people will live on the moon – find out just what they are in for.

S01E15 20 Mar 20

5m

Everything You Touched Turned to Gold?

What if you could turn things to gold? This episode shows that it might not work out that well.

S01E16 23 Mar 20

5m

You Could Actually Reach for the Stars?

Want to reach for the stars? It would be the journey of a lifetime - literally.

S01E17 24 Mar 20

5m

You Could Live in Slow Motion?

Find out why living in slow motion would let you see things no-one else can!

S01E18 25 Mar 20

5m

The Earth Was Shaped Like a Doughnut?

Would it be possible to live on an Earth shaped like a doughnut? You might be surprised!

S01E19 26 Mar 20

5m

You Could Run at the Speed of Sound?

A fun run goes wrong when one ambitious runner tries running at the speed of sound.

S01E20 27 Mar 20

5m

You Try to Catch a Falling Star?

What happens if you try to catch a falling star? Spoiler alert - probably best not to try!

S01E21 4 Mei 20

5m

You Woke Up as a Lizard Superhero?

Why waking up with lizard powers would make you useless on earth but a superhero in space!

S01E22 5 Mei 20

5m

You Could Build a Gingerbread House?

It’s the ultimate baking challenge: making a gingerbread house you could actually live in.

S01E23 6 Mei 20

5m

You Could Teleport?

Is it really possible to teleport? Spoiler alert: it could end in disaster!

S01E24 7 Mei 20

5m

You Took All the Water Out of the Sea?

Empty the oceans and you’d see hidden wonders, but you’d also cause the end of the world.

S01E25 8 Mei 20

5m

You Could Switch Off the Sun?

See what would happen if you really could switch off the sun.

S01E26 11 Mei 20

5m

You Could Fly Like a Bird?

Anyone can fly like a bird – you just have to travel across the solar system to do it!