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It’s Okay to Be Smart

So You Want to go to Mars?

Video duration: 8:17

Can't wait to get into outer space? Well there's a bit you need to know first... Spending time in zero gravity can have some pretty extreme effects on the human body. Still scientists are already making plans for long trips to other planets, but first we have to start with a few experiments here on Earth — and it all starts with astronaut Scott Kelly spending one full year in orbit.

Episodes of It’s Okay to Be Smart93

Video thumbnail: It’s Okay to Be Smart Does The Moon Really Orbit The Earth?

It’s Okay to Be Smart

Does The Moon Really Orbit The Earth?

What holds the moon up? Moonbeams!

2:44

Does The Moon Really Orbit The Earth?

2:44

Video thumbnail: It’s Okay to Be Smart What's The Loudest Possible Sound?

It’s Okay to Be Smart

What's The Loudest Possible Sound?

It's definitely higher than "11"

3:49

What's The Loudest Possible Sound?

3:49

Video thumbnail: It’s Okay to Be Smart Could We Clone Ourselves?

It’s Okay to Be Smart

Could We Clone Ourselves?

Just be yourself! Or be your other self. Whichever.

5:31

Could We Clone Ourselves?

5:31

Video thumbnail: It’s Okay to Be Smart Is Ultron Inevitable?

It’s Okay to Be Smart

Is Ultron Inevitable?

Will artificial intelligence ever surpass human intelligence?

7:42

Is Ultron Inevitable?

7:42

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