0:00:05 > 0:00:08# If you've got a question and you don't know where to go
0:00:08 > 0:00:11# Ask Nina for some help cos she's got a science show
0:00:11 > 0:00:14# She makes sense of her senses while helping all her fans
0:00:14 > 0:00:17# By doing her experiments with potions and with bangs
0:00:17 > 0:00:19- # Touch your tongue - Tongue
0:00:19 > 0:00:20- # Fingers - Fingers
0:00:20 > 0:00:22- # Eyes, Eyes - Ears, Ears
0:00:22 > 0:00:23- # Nose - Nose
0:00:23 > 0:00:26# Nina and the Neurons find out what you need to know
0:00:26 > 0:00:30# Nina and the Neurons find out what you need to know
0:00:30 > 0:00:32# Luke, he helps us with our eyes and Felix with our touch
0:00:32 > 0:00:35# Ollie sniffs out smells and scents and Belle, she hears so much
0:00:35 > 0:00:38# Bud is Ollie's brother He helps us with our taste
0:00:38 > 0:00:41# They're Nina's little Neurons and they're coming to your place
0:00:41 > 0:00:43- # Touch your tongue - Tongue
0:00:43 > 0:00:45- # Fingers - Fingers
0:00:45 > 0:00:46- # Eyes, Eyes - Ears, Ears
0:00:46 > 0:00:47- # Nose - Nose
0:00:47 > 0:00:50# Nina and the Neurons find out what you need to know
0:00:50 > 0:00:51# Yeah!
0:00:51 > 0:00:53# Nina and the Neurons find out what you need to know
0:00:53 > 0:00:55# Oh, yeah! #
0:00:56 > 0:00:59Woo...ha! Woo - ha-ha!
0:00:59 > 0:01:01Oh! Hello there.
0:01:01 > 0:01:05I'm just experimenting with this mirror - watch this.
0:01:05 > 0:01:08# Woo-hoo-doo-doo-doo-doo... #
0:01:08 > 0:01:10It's even funnier when I try to swim.
0:01:10 > 0:01:14Whoosh! Whoosh!
0:01:14 > 0:01:18It looks like I'm floating! Whee!
0:01:18 > 0:01:19COMPUTER BEEPS
0:01:19 > 0:01:24I hear a beep, I see a flash - I wonder what they're going to ask?
0:01:28 > 0:01:31- Hi, Nina.- Hi, Nina.- Hi.
0:01:31 > 0:01:33We've got a question for you.
0:01:33 > 0:01:35Why do astronauts float in space?
0:01:35 > 0:01:39That's a great question - why do astronauts float in space?
0:01:39 > 0:01:41It's going to be fun exploring this.
0:01:41 > 0:01:45Come down to my workshop and we'll investigate.
0:01:45 > 0:01:48BOTH: See you soon, Nina. Bye!
0:01:48 > 0:01:50Bye.
0:01:50 > 0:01:53I'm going to need help to answer this one,
0:01:53 > 0:01:57and I know just who to ask. OK, Neurons, time to get to work.
0:02:11 > 0:02:14ALL: Neurons at the ready, Nina.
0:02:14 > 0:02:18OK - today's question is "Why do astronauts float in space?"
0:02:18 > 0:02:22Which Neuron will be most useful helping us find the answer?
0:02:22 > 0:02:26- Me!- Me!- Me!- Me!- Me!
0:02:26 > 0:02:28Will it be Fabulous Felix?
0:02:28 > 0:02:32I can help so very much if you need the sense of touch.
0:02:32 > 0:02:34Will it be Beautiful Belle?
0:02:34 > 0:02:36I send messages to brain from ear.
0:02:36 > 0:02:38If there's a sound, I'll help you hear.
0:02:38 > 0:02:40Will it be Lovely Luke?
0:02:40 > 0:02:42For looking and seeing, day or night,
0:02:42 > 0:02:45I'll help you with your sense of sight.
0:02:45 > 0:02:47Will it be Awesome Ollie?
0:02:47 > 0:02:50If it's pongy or whiffy, but you can't tell,
0:02:50 > 0:02:52my messages help your sense of smell.
0:02:52 > 0:02:53Or will it be Baby Bud?
0:02:53 > 0:02:56Sour, salty, bitter or sweet,
0:02:56 > 0:02:59I'm your taste buddy whenever you eat.
0:03:03 > 0:03:04It's Felix.
0:03:05 > 0:03:10ALL: Go, Felix! Go, Felix! Go, Felix! Go, Felix!
0:03:10 > 0:03:13Go, Felix! Go, Felix! Go, Felix!
0:03:13 > 0:03:17Marvellous - a little touch can mean so much, Nina.
0:03:18 > 0:03:22Today's question is "Why do astronauts float in space?"
0:03:22 > 0:03:26Floating is a sensation we feel, so Felix will be helping us today.
0:03:26 > 0:03:30But stand by, Neurons - I may need help from all of you.
0:03:30 > 0:03:33I must get the workshop ready before the explorers arrive.
0:03:35 > 0:03:37Marty likes to watch TV
0:03:37 > 0:03:39and Phalgun likes to sing and dance to music.
0:03:39 > 0:03:43They both want to know - why do astronauts float in space?
0:03:43 > 0:03:47- Astronauts are always floating about. - We want to know why.
0:03:49 > 0:03:51So today, for one day only,
0:03:51 > 0:03:54Marty and Phalgun become the explorers!
0:03:58 > 0:04:02- Hi, guys.- Hi, Nina.- Hi, Nina. - Welcome to my workshop.
0:04:02 > 0:04:06Thank you for your question - "Why do astronauts float in space?"
0:04:06 > 0:04:10To find out the answer, let's start by using our senses.
0:04:10 > 0:04:14ALL: Woop-woo! A senses experiment! We're ready, Nina!
0:04:14 > 0:04:16Let's watch some special people
0:04:16 > 0:04:18who I think can help our investigation.
0:04:18 > 0:04:23This is the International Space Station, way up in space.
0:04:23 > 0:04:25There are astronauts living up there.
0:04:25 > 0:04:29Space is very different from Earth, but in what way?
0:04:29 > 0:04:33Let's experiment. First of all, with these balls.
0:04:33 > 0:04:36There you are, take one. Lovely. There you go.
0:04:36 > 0:04:38What do you think would happen
0:04:38 > 0:04:41if we were to let go of these balls now?
0:04:41 > 0:04:43- BOTH: They'll fall. - They would fall?
0:04:43 > 0:04:48OK, let's see - three, two, one, drop!
0:04:48 > 0:04:49Hey, you were right!
0:04:49 > 0:04:54Now, let's see what happens when you let go of something in space.
0:04:58 > 0:05:00- LUKE:- Look - it's floating.
0:05:00 > 0:05:02It's amazing, isn't it?
0:05:02 > 0:05:06So, on Earth, when you drop things, they fall to the ground,
0:05:06 > 0:05:08but in space, they float.
0:05:08 > 0:05:11I wonder what it's like to eat in space.
0:05:11 > 0:05:15First, let's eat some yogurt, here on Earth.
0:05:15 > 0:05:18Here are some spoons. There you go - lovely.
0:05:18 > 0:05:22Let's take a of bit yogurt each and let's eat it.
0:05:23 > 0:05:27Mmm. Now, let's see what happens when you eat in space.
0:05:34 > 0:05:39Whoa! I wonder if food tastes different in Space, Nina.
0:05:39 > 0:05:42Mm - well, it probably tastes the same, Bud.
0:05:42 > 0:05:46- Does the same thing happen to people, Nina?- Great question, Felix.
0:05:46 > 0:05:49Let's try jumping as high as we can
0:05:49 > 0:05:52and we'll see if we float or drop to the ground.
0:05:52 > 0:05:54OK, get ready...go!
0:05:54 > 0:05:55- Oh!- Ah!
0:05:55 > 0:05:57- Oh, keep going!- Oh!
0:05:57 > 0:06:01Boing, boing, boing! Higher! Higher!
0:06:01 > 0:06:04- Jump!- Oh!
0:06:04 > 0:06:07- What happened? - We didn't float, Nina.
0:06:07 > 0:06:10That's right - when people jump on Earth,
0:06:10 > 0:06:12you come back down to the ground.
0:06:12 > 0:06:15Let's see what happens when you move in space.
0:06:24 > 0:06:26FELIX: Oh! The astronauts are floating.
0:06:26 > 0:06:28Most impressive.
0:06:28 > 0:06:30Floating looks like fun,
0:06:30 > 0:06:33but it can be tricky to move around or handle objects,
0:06:33 > 0:06:35because they keep floating away.
0:06:35 > 0:06:38Why don't we float on Earth, Nina?
0:06:38 > 0:06:41Great question - I think we need to do another experiment
0:06:41 > 0:06:42to find out more.
0:06:43 > 0:06:47You asked, "Why do astronauts float in space?"
0:06:47 > 0:06:51So far, we've found out no matter how high you jump on Earth,
0:06:51 > 0:06:54you always come back down to the ground. But why is this?
0:06:54 > 0:06:58Now, this is a magnet, and magnets are very special,
0:06:58 > 0:07:01because they pull metal towards them.
0:07:01 > 0:07:02Woo!
0:07:05 > 0:07:08Magnet - I like that word.
0:07:08 > 0:07:11Magnets pull metal towards them,
0:07:11 > 0:07:14and Planet Earth also pulls things towards it.
0:07:14 > 0:07:17When you jump on Earth,
0:07:17 > 0:07:20you're pulled straight back down to the ground - whoo!
0:07:20 > 0:07:23So, is Earth a magnet, Nina?
0:07:23 > 0:07:25No, Felix. The Earth isn't a magnet.
0:07:25 > 0:07:29But it does pull things towards it, a bit like a magnet does.
0:07:29 > 0:07:33When you jump on Earth, you're pulled back down to the ground
0:07:33 > 0:07:35- by something called gravity. - Gravity?
0:07:35 > 0:07:37That sounds very interesting.
0:07:37 > 0:07:42Earth is a gigantic planet, and really gigantic things -
0:07:42 > 0:07:44like planets - have gravity.
0:07:44 > 0:07:47We know that gravity pulls things towards it,
0:07:47 > 0:07:49but scientists don't really know why.
0:07:49 > 0:07:52Now, we're going to put this big magnet
0:07:52 > 0:07:56underneath our pretend Planet Earth.
0:07:56 > 0:07:57Oh-oh-oh!
0:07:58 > 0:07:59There we go.
0:08:01 > 0:08:03And here we have some metal powder.
0:08:03 > 0:08:07There you go. Phalgun, some for you. And some for you, Marty.
0:08:07 > 0:08:11And we're going to sprinkle it all over the paper.
0:08:20 > 0:08:23- LUKE:- Look - it's moving towards the magnet.
0:08:24 > 0:08:28Excellent, let's stop there - pop your pots down.
0:08:28 > 0:08:30Now, what happened to the metal powder?
0:08:30 > 0:08:32It's around the magnet.
0:08:32 > 0:08:36Yes! The metal powder that's nearest the magnet underneath
0:08:36 > 0:08:38has been pulled towards it.
0:08:38 > 0:08:40But what's happened to the rest?
0:08:40 > 0:08:42It hasn't moved, Nina.
0:08:42 > 0:08:45That's right - only metal powder nearest the magnet
0:08:45 > 0:08:47has been pulled towards it.
0:08:47 > 0:08:49But the metal powder that was far away
0:08:49 > 0:08:52hasn't been pulled by the magnet as much,
0:08:52 > 0:08:55and it's the same with the real Planet Earth.
0:08:55 > 0:08:58Because we're actually standing on the Earth,
0:08:58 > 0:09:01we're pulled by gravity and so are the things around us.
0:09:01 > 0:09:05But astronauts in space are far, far away from the Earth,
0:09:05 > 0:09:08so they get pulled much less by gravity.
0:09:08 > 0:09:12FELIX: So that's why, when they're in space, astronauts float.
0:09:12 > 0:09:14Yes! Well done, Felix.
0:09:14 > 0:09:17What's it like to float in space, Nina?
0:09:17 > 0:09:19Oh - interesting question.
0:09:19 > 0:09:23All I can say is our next experiment is going to blow you away!
0:09:25 > 0:09:30FELIX: I love this bit. I wonder where Nina is taking us?
0:09:30 > 0:09:34- BELLE:- Nina said it's somewhere that will "blow them away".
0:09:34 > 0:09:38- BUD:- Maybe we're going sailing on a big, windy yacht.
0:09:38 > 0:09:42And we'll get blasted by fresh air and salty sea waves.
0:09:42 > 0:09:46- LUKE:- We've arrived - but I can't see any sailboats.
0:09:46 > 0:09:50So, you asked "Why do astronauts float in space?
0:09:50 > 0:09:52"What does floating in space feel like?"
0:09:52 > 0:09:56Well, can you believe - we are about to find out!
0:09:57 > 0:09:59THEY LAUGH
0:09:59 > 0:10:03- LUKE:- Wow - it looks like they're in space.
0:10:03 > 0:10:05Because space is so far away
0:10:05 > 0:10:08and, eh...most of us don't have our own rockets to get there,
0:10:08 > 0:10:12places like this allow people to find out - safely -
0:10:12 > 0:10:13what floating feels like.
0:10:13 > 0:10:17It has a really big fan that will lift us up.
0:10:17 > 0:10:18Let's try it.
0:10:34 > 0:10:37THEY SCREAM AND CHEER
0:10:37 > 0:10:38- ALL:- We're floating!
0:10:38 > 0:10:44Ah! Oh, my - it feels so light and...well, floaty.
0:10:56 > 0:10:59Well done, guys! How did that feel?
0:10:59 > 0:11:03- It was brilliant! - We felt like we were flying.
0:11:03 > 0:11:07Floating is great fun, but I wonder what it's like for astronauts
0:11:07 > 0:11:10trying to move around or actually do things in space?
0:11:10 > 0:11:13With that in mind, I'd like you to go back in
0:11:13 > 0:11:16and try floating through this hoop,
0:11:16 > 0:11:18as if it's a door in a spacecraft.
0:11:27 > 0:11:31FELIX: Floating certainly makes moving and holding things tricky.
0:11:33 > 0:11:36Great job, guys - how was that?
0:11:36 > 0:11:39- It was quite difficult. - But it's great fun.
0:11:39 > 0:11:44# Nina and the Neurons. #
0:11:44 > 0:11:47So, your question was "Why do astronauts float in space?"
0:11:47 > 0:11:49I think we've answered it.
0:11:49 > 0:11:54FELIX: Planet Earth is gigantic and pulls things towards the ground -
0:11:54 > 0:11:56a bit like a huge magnet.
0:11:56 > 0:11:58- BELLE:- And we call this gravity.
0:11:58 > 0:12:02- LUKE:- Astronauts in space are too far away from Earth
0:12:02 > 0:12:04to get pulled as much by gravity.
0:12:04 > 0:12:07OLLIE: So astronauts and their things float.
0:12:07 > 0:12:10- BUD:- Floating makes holding on to things tricky,
0:12:10 > 0:12:12but it's brilliant fun!
0:12:12 > 0:12:15I hope that's answered your question.
0:12:15 > 0:12:18BOTH: Thanks, Nina. Bye!
0:12:18 > 0:12:19You're welcome. Bye!
0:12:23 > 0:12:26If you want to know more about the science all around us,
0:12:26 > 0:12:30go to the Nina section on the CBeebies website - have fun!
0:12:30 > 0:12:35# Every day the sun comes up it brightens up the sky
0:12:36 > 0:12:39# A brand-new day to understand
0:12:39 > 0:12:42- # A chance to ask ourselves why - Why?
0:12:42 > 0:12:47# There's a world of possibilities outside our front door
0:12:47 > 0:12:49# Our front door
0:12:49 > 0:12:53# So every day take a look around and explore
0:12:53 > 0:12:56# Explore, explore, explore, explore...
0:12:56 > 0:12:58- # Exploring in the garden - Grass!
0:12:58 > 0:13:01- # Exploring in the park - Rivers!
0:13:01 > 0:13:04- # Exploring in the daytime - Mountains!
0:13:04 > 0:13:08- # And even when it's dark - Planets!
0:13:08 > 0:13:09# Look at the Earth
0:13:09 > 0:13:10# Look at the sky
0:13:10 > 0:13:12# Look at the world before us
0:13:12 > 0:13:15# Explore, explore, explore, explore...
0:13:15 > 0:13:18# We're always on the lookout
0:13:18 > 0:13:21- # We're Earth explorers - Oh-oh, oh-oh
0:13:21 > 0:13:24- # We're Earth explorers - Oh-oh, oh-oh
0:13:24 > 0:13:28# We're Earth explorers. #
0:13:28 > 0:13:31Exploring is about looking at the world around us,
0:13:31 > 0:13:34asking why and finding the answer.
0:13:34 > 0:13:37Whether it's deep underground, at the end of your playground
0:13:37 > 0:13:41or way above the clouds, keep exploring our exciting world.
0:13:41 > 0:13:44See you again soon. Bye.
0:13:44 > 0:13:45ALL: Bye!
0:13:45 > 0:13:48Subtitles by Red Bee Media Ltd