Arvin Ash

Does the universe have a purpose? Do humans have cosmic significance? (2021x6)

Udgivelsesdato: Mar 05, 2021

Go to: https://brilliant.org/ArvinAsh -- you can sign up for free! And the first 200 people will get 20% off their annual membership. 0:00 - Mote of dust 1:49 - How did life begin? 5:01 - How humans evolved 7:22 - Multiverse? 8:29 - Are we alone in the universe? 10:47 - What makes humans unique? 11:24 - What is the purpose of life? The Milky way galaxy is composed of up to 400 billion stars, and at least that many planets. Our star, the sun is one of those billions, about a third to halfway out from the galactic center. And we humans are but one of at least 9 million different forms of life on earth. What does this mean for us? Are humans of any significance, or are we just a burden on our ecosystem? How did human get here? How did life start? How did earth get here? Does the universe have a purpose? Do humans have a purpose? At first blush it would seem that we are indeed a speck of dust, of no particular cosmic significance. But let’s step back and look at how we got here. Consider the improbability of not only finding ourselves in this universe, but the formation of such a universe that would have us in the first place. The universe was born 13.8 billion years ago in a massive expansion - the big bang. It could have expanded too fast such that no structures formed. It could have expanded too slow, such that it re-collapsed into a singularity. But it expanded at just the right rate. 200 million years after the big bang the first stars formed. These were fast burning stars that burned out and exploded in supernovae explosions. They seeded the universe with heavier elements such as carbon, nitrogen, oxygen which had formed in their cores. Our own sun probably formed from such a nebula. The heavier elements that were not consumed by the =the sun, became the leftover debris that formed the planets including earth. Earth was at such a distance from its star that temperatures allowed water to exist in liquid form on its surface, makin