Galaxies

Everything Everywhere Daily: History, Science, Geography & More

Gary Arndt

Education, History

4.7 • 2.3K Ratings

🗓️ 2 May 2023

⏱️ 11 minutes

🔗️ Recording | iTunes | RSS

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Summary

For most of human existence, we looked up at the night sky and thought that was all there was to the universe. However, in the 20th century, as telescopes improved, we made a shocking discovery. The universe was much, much larger than we supposed, and some of those points of light in the sky were, in fact, collections of stars themselves. Learn more about galaxies, what they are made of, and all about our own, on this episode of Everything Everywhere Daily. Sponsor Sponsors BetterHelp is an online platform that provides therapy and counseling services to individuals in need of mental health support. The platform offers a range of communication methods, including chat, phone, and video sessions with licensed and accredited therapists who specialize in different areas, such as depression, anxiety, relationships, and more. Get 10% off your first month at BetterHelp.com/Everywhere ButcherBox is the perfect solution for anyone looking to eat high-quality, sustainably sourced meat without the hassle of going to the grocery store. With ButcherBox, you can enjoy a variety of grass-fed beef, heritage pork, free-range chicken, and wild-caught seafood delivered straight to your door every month. Visit ButcherBox.com/Daily to get 10% off and free chicken thighs for a year. InsideTracker provides a personal health analysis and data-driven wellness guide to help you add years to your life—and life to your years. Choose a plan that best fits your needs to get your comprehensive biomarker analysis, customized Action Plan, and customer-exclusive healthspan resources. For a limited time, Everything Everywhere Daily listeners can get 20% off InsideTracker’s new Ultimate Plan. Visit InsideTracker.com/eed. Subscribe to the podcast! https://link.chtbl.com/EverythingEverywhere?sid=ShowNotes -------------------------------- Executive Producer: Charles Daniel Associate Producers: Peter Bennett & Thor Thomsen Become a supporter on Patreon: https://www.patreon.com/everythingeverywhere Update your podcast app at newpodcastapps.com Discord Server: https://discord.gg/UkRUJFh Instagram: https://www.instagram.com/everythingeverywhere/ Facebook Group: https://www.facebook.com/groups/everythingeverywheredaily Twitter: https://twitter.com/everywheretrip Website: https://everything-everywhere.com/ Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0	For most of human existence, we looked up at the night sky and thought that that's all there was to the universe.
0:06.0	However, in the 20th century, as telescopes improved, we made a shocking discovery.
0:11.0	The universe was much, much larger than we suspected, and many of those
0:16.1	points of light in the sky were in fact collections of stars themselves.
0:20.0	Learn more about galaxies, what they're made of, and all about our own, on this episode of Everything Everywhere Daily. If we wanted to provide a very rough taxonomy of the universe, we could start with things
0:47.0	like planets, planetoids, asteroids, meteors, and other such bodies.
0:51.6	These are usually rocky objects or can sometimes be
0:53.9	amalgamations of gas like Jupiter. All of these objects are objects whose
0:58.6	matter is gravitationally or in the case of very small objects chemically or electrostatically bound to itself.
1:06.0	Then you have stars which I've talked about in a previous episode.
1:10.0	Most planets and planet-like objects that we know of are under the gravitational influence of a star.
1:16.0	They orbit around it and are part of a star's solar system.
1:20.0	A star, of course, is simply an amalgamation of gases, usually hydrogen and helium, that is massive enough for fusion to occur.
1:27.0	For the longest time, this is what we assume the universe consisted of.
1:31.0	We had objects in our solar system of which we were aware
1:34.2	and then there were other stars in the sky that we could see. However, there was
1:38.9	something else in the sky that weren't points of light. There was a band of faint light that could be seen in the sky.
1:45.0	It didn't extend over the entire sky. It was as if it was a faint smear of light which extended across it.
1:51.0	We know this band of faint light as the
1:55.0	the Milky Way. Over the centuries there were theories as to what this
1:58.4	smear of light was. The Greek philosopher Democritus as early as the
2:02.4	5th century
	...

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