The Shape-Shifting Blob Galaxy! |

[00:00:00][music] Are we there yet? You asked that 5 minutes ago and I'll ask again. [music] Wait.

[00:00:12][music] Wa.

[00:00:28]I have never seen anything like that.

[00:00:31]>> Welcome to the shape-shifting blob galaxy. I already love this place.

[00:00:37][music] >> Uh, did those just combine? [music] >> That seems strange.

[00:00:50]>> Very strange.

[00:00:52][music] The scary dragon is gone.

[00:01:00][music] And the giant flower, too.

[00:01:05]And the cool spaceship, too. [music] The galaxy is losing its shapes.

[00:01:15]We need a real solution.

[00:01:20]>> Now I understand.

[00:01:22]>> Hurry up. Tell us what is happening.

[00:01:25]>> These blobs are affected by something [music] called surface tension.

[00:01:29]>> Surface what?

[00:01:30]>> Surface tension. What does it do? It pulls the surface of a blob inward.

[00:01:36]Almost like the blob is constantly trying to hold itself together. [music] >> So when two blobs touch, >> surface tension pulls them [music] into one bigger blob. That is why they keep joining together.

[00:01:50]>> Exactly. And bigger [music] blobs are easier to keep together.

[00:01:54]>> Yes, that is why the giant blobs keep growing. [music] >> Wait, look over there.

[00:02:03][music] The biggest mergers always start in crowded places.

[00:02:09]>> You're right. So, what do we do? [music] >> We spread the blobs apart.

[00:02:14]>> That's it.

[00:02:15]>> If they stop touching, [music] they stop merging. Exactly.

[00:02:21]I will take care of this. [music] >> It worked.

[00:02:28][music] I will take care of those two.

[00:02:32][music] >> Yippee. Create bigger gaps. Keep the blobs separated. [music] The dragon returns.

[00:02:46]The flower returns.

[00:02:49]The spaceship [music] returns.

[00:02:51]>> Science helped us understand the problem.

[00:02:59]>> Huh?

[00:03:01]>> This trail is not on our map. [bell] >> It looks like space glitter. [music] >> Very shiny space glitter. [bell] >> Mars wants to touch it.

[00:03:14]Let us be careful.

[00:03:16]>> [music] >> The trail leads to something.

[00:03:19]>> I see a whole galaxy ahead. [bell] [music] [bell] >> Wa!

[00:03:30]>> It looks like a golden snowstorm.

[00:03:32][music] >> Welcome to the sticky dust galaxy.

[00:03:37]>> Beautiful, but strange.

[00:03:40][music] I shall make a dust mustache.

[00:03:45]Please do.

[00:03:50]>> Behold, Professor Mars.

[00:03:53]>> Let me try.

[00:03:58]>> Interesting.

[00:03:59]>> Uh, moon. [music] >> Oh, >> you have a glitter spot.

[00:04:07]>> It is kind of cute.

[00:04:09]>> Then I want one, too. [bell and music] I got more than one spot.

[00:04:17]>> You are [music] turning into a golden potato.

[00:04:21]>> Let me see.

[00:04:24]Wa!

[00:04:26]Now Mercury is a golden potato, too.

[00:04:30]I am too fit to be a potato.

[00:04:34]The dust is getting thicker.

[00:04:43]Everyone stop for a moment.

[00:04:45]>> The more we move, the worse it gets.

[00:04:48]Good observation.

[00:04:50]But why is it sticking?

[00:04:53]I think the glowing dust is getting charged. [music] >> Charging us like tiny invisible [music] electricity.

[00:05:02]>> Exactly. This is static electricity.

[00:05:06]Static electricity makes dust [music] stick.

[00:05:09]>> Yes. When things rub together, they can get tiny invisible charges.

[00:05:15]>> So, our spinning and shaking created these tiny invisible charges.

[00:05:20]>> Yes. [music] The charges pull the tiny dust pieces towards you.

[00:05:26]>> That is why the dust sticks instead of floating away.

[00:05:29]>> Exactly. Then we need to stop spinning and shaking.

[00:05:33]>> Yes. We need to move very very carefully without shaking.

[00:05:38]>> Good plan.

[00:05:40]>> This is how we should move.

[00:05:43]>> Everyone follow Moon.

[00:05:46]>> Small movements. Very small movements.

[00:05:49]Very very small movements.

[00:05:54][music] >> Some dust is leaving. The tiny invisible charges are weakening. Slow movement is helping.

[00:06:04]Mine is falling off, too.

[00:06:12]>> Goodbye, static dust.

[00:06:19]>> Huh?

[00:06:21]>> Uh, why is space making bubbles now?

[00:06:25]>> That thing looks strange.

[00:06:30]Can I poke it? That is probably a terrible idea.

[00:06:41]>> Wa! That felt like an electric current >> again. Again.

[00:06:46]>> Huh?

[00:06:51]Why are there suddenly bubbles everywhere?

[00:06:54]I officially hate these things.

[00:07:05]Help! I'm inside the space bubble.

[00:07:08]>> Mercury got trapped.

[00:07:11]>> The bubble is glowing brighter.

[00:07:15]Why is it so hot in here? Wait, it's heating up.

[00:07:23]I feel like a toasted marshmallow.

[00:07:27]My light is entering the bubble but not escaping. [music] [bell] >> My rings are heating up.

[00:07:37]>> Those bubbles are evil.

[00:07:42]>> If this [music] spreads further, the whole solar system will overheat.

[00:07:50]>> Why is the solar system full of glowing bubbles?

[00:07:54]>> [laughter] >> Omsum, save me before I become soup.

[00:08:04][music] Now I understand.

[00:08:06]>> You do.

[00:08:08]>> The bubbles are trapping heat.

[00:08:11]>> How? [music] Sunlight enters easily, but the heat cannot escape.

[00:08:19]>> So the bubbles are acting like giant ovens.

[00:08:22]>> Exactly. [music] The trapped heat keeps building. And I am the pizza.

[00:08:30]So, how do we stop them?

[00:08:35]We do not pop them.

[00:08:38]>> Oh, man.

[00:08:40]We slowly release the heat.

[00:08:43]>> Slowly. [music] >> If heat escapes gently, the bubbles will shrink safely. But how?

[00:08:51][music] Create tiny openings.

[00:08:56]>> Small openings let heat [music] escape slowly.

[00:08:59]>> Exactly.

[00:09:03]>> Please hurry.

[00:09:06]>> Everyone move carefully.

[00:09:14][music] >> It worked.

[00:09:16]>> Great. But have you guys forgotten about me?

[00:09:23]>> [music] >> I have been reborn.

[00:09:28][music] Yippee.

[00:09:34]>> Your idea saved all of us.

[00:09:36]>> My job here is done. Bye-bye.

[00:09:43][music] >> Huh? [clears throat] Wait for me.

[00:09:48]Son is joining too.

[00:09:50]>> [music] >> Yes, we may need light for today's adventure.

[00:09:56][music] >> I see something shining far ahead.

[00:10:02]Where? There.

[00:10:06]Interesting.

[00:10:08]>> It looks like treasure. Let's explore.

[00:10:17][music] Whoa.

[00:10:20]This is beautiful.

[00:10:23][music] >> Everything is reflecting my light.

[00:10:27]Too many shiny things. [music] I am going in. I found treasure. [music] >> Let's observe before collecting anything.

[00:10:39][music] >> Did those marbles just row by themselves?

[00:10:48]They are all going in the same direction.

[00:10:52]>> Very interesting.

[00:10:55]>> I will race you guys.

[00:10:58]Okay, they are fast. [music] More are joining.

[00:11:04]Look over there.

[00:11:09]Huh? The whole planet is moving.

[00:11:16]They are sticking together.

[00:11:18]>> This is becoming dangerous.

[00:11:21]They look like giant metal trees.

[00:11:25]>> Metal trees that are growing too fast.

[00:11:32]>> I will pull the marbles away.

[00:11:34]>> Wait. Mars.

[00:11:37]>> Come on.

[00:11:40]Oops.

[00:11:42]>> You made it bigger.

[00:11:46]It is coming this way. Move back.

[00:11:54]>> It rebuilt itself.

[00:11:57]Umsum, what is happening?

[00:11:59]>> Those dark hills are pulling the metal marbles.

[00:12:03]>> Pulling without hands.

[00:12:05]>> Yes, that is magnetism. [music] >> Magnetism.

[00:12:12]A magnet can pull some metals with an invisible force.

[00:12:16]>> So those dark hills are like giant magnets.

[00:12:20]>> Exactly.

[00:12:21]>> But how do we stop the towers?

[00:12:28]The marbles near the hottest side are moving slower. The side facing me. Yes.

[00:12:35]>> Good observation, Jupiter.

[00:12:37]>> Heat can fight [music] magnets.

[00:12:40]If the magnetic rocks warm up, their pull becomes weaker.

[00:12:45]>> Son, warm up the dark hills.

[00:12:48][music] [music] >> It worked.

[00:12:58]>> [music]