Do galaxies orbit anything?

Moment of Um

American Public Media

Kids & Family, Education For Kids

4.4 • 1.5K Ratings

🗓️ 21 December 2023

⏱️ 6 minutes

🔗️ Recording | iTunes | RSS

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Summary

Our galaxy is amazing, but it’s not the only one. Astronomers think there could be two trillion others out there. So, what’s up with those other galaxies? Are they just standing still, or do they orbit something? We asked astrophysicist Ian Hall to help us find the answer.

Got a question that’s circling around in your brain? Send it to us at BrainsOn.org/contact, and we’ll help find a universally appealing answer!

Transcript

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0:00.0	For the brains behind brains on, this is Moment of U.
0:04.0	The moment of U.
0:07.0	Moment of U comes to you from APM Studios.
0:12.0	I'm Cosmo Quark Clark and I'm a comet.
0:14.6	I've been really busy lately.
0:19.6	So many holiday parties to attend, ugly Christmas sweaters to buy, and snow angels to make.
0:26.0	I'm exhausted.
0:28.0	Kidding! I'm a comet, for quark sake. I don't wear sweaters or make snow angels,
0:34.0	although I am basically a giant frozen snowball hurtling through space,
0:39.0	does that count?
0:41.0	Anyway, since I don't have the hustle and bustle of the holiday seasons to worry about, I have lots of extra time to think about big, big ideas.
0:50.0	Like galaxies, whoa, a galaxy is a massive collection of billions of stars and their solar systems.
1:00.0	They're a huge.
1:03.0	Well, did you know that astronomers think there could be two trillion other galaxies out there?
1:09.0	That's right. Two trillion.
1:12.0	That'd be like if you gave every single person on earth a bag of 250
1:17.7	marbles where each marble was one galaxy. Whoa!
1:23.4	But what are all those galaxies doing out there?
1:27.8	Do they look like ours?
1:29.4	Do they have big hopes and dreams?
1:31.4	And do they orbit anything in a circle?
1:35.1	My human buddy Lillica was just asking about this.
	...

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