Chronometric revolution | Cosmology & Astronomy | Khan Academy
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Discussion of the relatively recent changes in our ability as a species to shine light on our deep past. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/cosmology-and-astronomy/life-earth-universe/measuring-age-tutorial/v/carbon-14-dating-1?utm_source=YT&utm_medium=Desc&utm_campaign=cosmologystronomy Missed the previous lesson? https://www.khanacademy.org/science/cosmology-and-astronomy/life-earth-universe/humanity-on-earth-tutorial/v/random-predictions-for-2060?utm_source=YT&utm_medium=Desc&utm_campaign=cosmologystronomy Cosmology & Astronomy on Khan Academy: The Earth is huge, but it is tiny compared to the Sun (which is super huge). But the Sun is tiny compared to the solar system which is tiny compared to the distance to the next star. Oh, did we mention that there are over 100 billion stars in our galaxy (which is about 100,000 light years in diameter) which is one of hundreds of billions of galaxies in just the observable universe (which might be infinite for all we know). Don't feel small. We find it liberating. Your everyday human stresses are nothing compared to this enormity that we are a part of. Enjoy the fact that we get to be part of this vastness! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Cosmology & Astronomy channel: https://www.youtube.com/channel/UChNPnEkW8LYZ5Rwi8_A2-DA?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Comments
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1 person can't write
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Will you please do anthropology videos? It seems like you're already heading in that direction but i would love if you introduced and described all the known fossils from anthropology in detail and then moved into neanderthal & human population mixing and the migration of humans out of africa.
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@personkid20 You still didn't even tell me what you deem wrong in the first place...
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we know when the stories began.....they took place "many moons ago..."
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@personkid20 ??? What's your point? What has that got to do with chronometry? When someone comes along and spells TRUE in all caps, it's a good sign that something only backed by belief is coming.
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I think an understanding of the speed of light and the ability to measure astronomical distances qualifies as a chronometric revolution: from the understanding that we can SEE the past (from recent past to DEEP past) by looking into the cosmos.
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Very smart dude, not sure he's right, but really having a great go at it
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Its like Aristotle teaching in an Academia!
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3rd
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Seriously Insane!!
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@superfrog5501 you are terrible
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