Galaxies | Educational Bedtime Reading for Sleep

I Can’t Sleep

Benjamin Boster & Glassbox Media

Mental Health, Health & Fitness, Alternative Health

4.6 • 1K Ratings

🗓️ 7 July 2025

⏱️ 62 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

Drift off with this calm bedtime reading designed to help with insomnia and sleepless nights. Tonight’s peaceful episode explores galaxies, the immense systems of stars, planets, gas, and dust that shape our universe. You’ll learn about their types, structure, and the discoveries that continue to expand our understanding of the cosmos, all shared in Benjamin’s steady, soothing narration. There’s no whispering or hypnosis—just tranquil, fact-filled storytelling to reduce stress and bring rest. Press play, close your eyes, and let your imagination drift among the stars as you fall asleep. Want More? Request a Topic: https://www.icantsleeppodcast.com/request-a-topic Ad-Free Episodes: https://icantsleeppodcast.fm/ Shop Sleep-Friendly Products: https://www.icantsleeppodcast.com/sponsors Join the discussion on Discord: https://discord.gg/myhGhVUhn7 This content is derived from the Wikipedia article on Galaxy, available under the Creative Commons Attribution-ShareAlike (CC BY-SA) license. Read the full article: Wikipedia - Galaxy. Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0	You're listening to a Glassbox media podcast.
0:10.1	Welcome to the I Can't Sleep podcast, where I help you drift off one fact at a time.
0:18.3	I'm your host, Benjamin Boster, and today's episode is about galaxies.
0:26.2	A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter,
0:36.4	bound together by gravity.
0:39.3	The word is derived from the Greek Galaxias, literally milky, a reference to the Milky Way
0:46.7	galaxy that contains the solar system.
0:51.7	Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less
0:59.5	than a thousand stars to the largest galaxies known, super giants, with 100 trillion stars,
1:09.7	each orbiting its galaxy's center of mass.
1:14.3	Most of the mass in a typical galaxy is in the form of dark matter, was only a few percent of that
1:22.9	mass visible in the form of stars and nebulae.
1:28.3	Supermassive black holes are a common feature of the centers of galaxies.
1:35.3	NGC.44-414, a typical spiral galaxy in the constellation Coma baronices, is about 55,000 light years in diameter,
1:48.0	and approximately 60 million light years from Earth.
1:54.0	Galaxies are categorized according to their visual morphology as elliptical, spiral, or irregular.
2:03.6	The Milky Way is an example of a spiral galaxy.
2:08.6	It is estimated that there are between 200 billion, 2 times 10 to the 11th, to 2 trillion galaxies in the observable universe.
2:19.9	Most galaxies are 1,000 to 100,000 parsecs in diameter,
2:26.6	approximately 3,000 to 300,000 light years,
2:30.8	and are separated by distances in the order of millions of parsecs, or mega-parsecs.
2:38.8	For comparison, the Milky Way has a diameter of at least 26,800 parsecs, 87,400 light years,
	...

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