Richard Dawkins Foundation for Reason & Science
7 HN recommenders · recommended in 9 months, 2009–2024
1:04:52 · 2.6M views · Oct 22, 2009
Lawrence Krauss's 2009 talk on the current picture of the universe, how it will end and how it could have come from nothing. It covers the expanding universe, cosmic background radiation and the cosmological constant.
HN regards it as a famous, mesmerizing talk, especially for the point that distant galaxies will become unobservable.
9 comments from Hacker News
There is also one of my favorite talks tangentially related by Lawrence Krauss. He explains that eventually a civilization exploring the universe around them will only see it's own galaxy and likely believe that's all there is. We are living in an extraordinary time where we are still able to see other galaxies. this video
I feel this video is apt for this topic - Laurence Krauss - A universe from nothing. this video It had me mesmerized and mystified for the whole run.
Slightly off-topic, but—how mercilessly correct he is about physics of our space-time. We all know the universe is expanding, but many consequences of this phenomenon are not obvious—such as that after some time we'll be unable to see (and therefore ever reach) even nearby galaxies, since they're constantly getting farther and farther away. We'll be completely alone forever, and future scientists would have completely wrong picture about universe in such an absence of information. Thinking about that, we already miss a lot of information because of red shift… There're facts potentially explaining the eternal question ‘about universe and everything’, but they are slipping away from us, crossing the event horizon never ever to be learned about. Not a fun thing to know. Personally for me that was a discovery thanks to the explanation by Lawrence Krauss in his ‘A Universe From Nothing’ popular talk ( this video ).
"I confess that something in me tightens whenever I hear a scientist pontificating on issues that belong to the arena of philosophy or metaphysics. I will gladly listen to Stephen Hawking when he holds forth on matters of theoretical physics, but he’s as qualified to talk about philosophical and religious issues as any college freshman." The existence of the universe is very much a matter of theoretical physics and Steven Hawking, understanding this, is surely more qualified to talk about such issues than Rev. Robert Barron regardless of his opinion that they are philosophical or religious. I don't know what prompted Steven Hawking's appearance in the media with this opinion, but here is a lecture on one explanation for why the universe does not need any first cause, this video
Everything from 3 blue 1 brown: [LINK] Visualization of Quantum Physics (Quantum Mechanics): [LINK] history of the entire world, i guess: [LINK] TIMELAPSE OF THE FUTURE: A Journey to the End of Time (4K): [LINK] Humanity was born way ahead of its time. The reason is grabby aliens. and Grabby aliens: when we'll meet them, how big they are, and other predictions [LINK] [LINK] Everyday Astronaut videos (he has 90 min documentary on Soviet rocket engine): [LINK] Cool Worlds - a lot of 25-35 min very nice astronomy explanations: [LINK] 'A Universe From Nothing' by Lawrence Krauss: this video