Why is the sun so hot?

Moment Of Um

Lemonada Media

Kids & Family, Education For Kids

4.4 • 1.5K Ratings

🗓️ 31 July 2024

⏱️ 5 minutes

🔗️ Recording | iTunes | RSS

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Summary

Our sun is a big fiery ball of gas. It is very bright and very hot. So hot that we can’t even send spacecraft there without them burning up! But how does the sun make all that heat? We asked physics grad student Raj Katti help us find the answer. Got a question that’s a real scorcher? ? Send it to us at BrainsOn.org/contact, and we’ll get bRIGHT to work finding the answer. See omnystudio.com/listener for privacy information.

Transcript

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0:00.0	From the brains behind brains on, this is the Moment of Um.
0:07.0	Um, um, um, um, um, um, um, um, moment of um comes to you from APM Studios.
0:14.2	I'm Franz List.
0:16.3	No, not the composer and virtuoso pianist from the 1800s.
0:22.4	I get that a lot.
0:24.1	No, I'm just a guy who really, really loves to make lists.
0:31.1	What a productive morning.
0:35.4	I'm already on my 17th list for the day. First, obviously,
0:41.6	I made my list of lists that I wanted to write today. And then it was the grocery list,
0:48.4	the chore list, a list of new nicknames for my buddy rabbits, Claude and Marie, a list of all of my favorite
0:55.9	dance moves, and you get the picture. But right now, I'm working on a list of the hottest things
1:03.9	I can think of. I've got the inside of a volcano. Um, a pizza oven?
1:12.1	Oh, of course.
1:14.6	The sun!
1:16.8	Even at its surface, the sun is hotter than like 14 pizza ovens.
1:22.7	That goes right to the top of the list.
1:26.4	Hmm, I wonder how the sun makes all that heat.
1:31.5	My friend Jake was curious, too.
1:34.8	My name is Jake.
1:36.7	My question is why is the sun so hot?
1:42.4	So the sun is made out of a huge number of atoms, many, many more than the number of
1:47.0	grains of sand on earth, and they're all whizzing around each other.
	...

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