Professor Martin Rees: From Mars to the Multiverse

[@jonwatkins254]

Excellent !

[@nunomaroco583]

Amazing, realy like to know if individual particles can have a halo of darkmatter like galáxies have? Or darkmatter can exist in the void between nucleos of an atom and the electrons? All the best

[@monty3854]

There is no void between the nucleus and the electron according to quantum physics.

[@nunomaroco583]

@@monty3854 Hi Thanks for answer, at the momment my understending is that electron is more like a wave around the atom, but atom, quarks, gluons also are more like waves....

[@monty3854]

@@nunomaroco583 It can come down to different interpretations and I'm no expert. The way I understand it is that everything falls under the "wave function of the universe" If you haven't already I'd recommend listening to Sean Carrol's "biggest ideas in the universe" playlist on his KZbin channel. He explains things far clearer and with a deeper understanding than I ever could.

[@nunomaroco583]

@@monty3854 im just curiose, not expert, far far away from that, at the momment I see Eduard Witten, at Closer to truth, he catch my atention, I like very much about diferent theorys, in the past string theory blow my mind, after I folow other ideas, supersemmetry, CCC Roger Penrose, And others, but Eduard Witten talk blow my mind again, im curiose again about string theory, I belive Sean Carroll is a string man too, acording string theory, everything is strings whit diferent vibrations. ....

[@monty3854]

@@nunomaroco583 curiosity is great! I love three subjects I just wouldn't want to give any definitives in an online discussion as I'm sure to make mistakes.. Roger Penrose is a particular hero of mine! Sean Carroll is a proponent of the Many Worlds interpretation, which while mind boggling is probably the purest form of quantum mechanics as It takes the data at face value.

[@AMGOSUK]

Wonderful explanation

[@c.l.m.4726]

Martin what is your scientific opinion on this - did men really go to the moon and back in 1969? To be honest I can't make my mind up on this one. It all comes down to science and logic I suppose. Did the required technology exist back then? How could humans survive the radiation and certain dangers outside the earths atmosphere? Surely some health impacts would have happened? And vacuum, pressure, gravity are other big concerns. And a perfectly clean tin-foil landing module? Absolutely no surface disturbance? I still can't decide myself but I'm hugely interested to hear your scientific opinions on the reality of this horrendously dangerous journey?

[@KarpucMotoring]

Yes they did.

[@c.l.m.4726]

@@KarpucMotoring we can't even get to the moon now with advanced technology. Artemis have been planning since 2017 and still only done unmanned test flights. There's no way man got there in 1969. Any modern astronaut being honest to themselves knows it's BS about the landing in 1969.

[@tonycucca4499]

Are you fucking kidding me? Seriously,you're just fucking with us right? First of all if you were actually giving a chance to ask this man a question this would be it? Aside from that do you wanna believe in something so badly that you really think mankind hasn't been to the moon? Wtf is wrong with you

[@michaelnelson3752]

The only evidence you need was during one of the Apollo landings astronaut Alan Sheppard placed reflective mirrors on the moon tested on Earth by lasers of which we still use those test of aiming at those mirrors to reflect back the laser and accurately measure the speed of light. This is still done today with those mirrors and has been used in many applications such as fine tuning of your GPS to factor in Einstein's relative effect of light on the measurement process of GPS so that you can be within feet of your destination........and without those test you'd be miles off course.................who put the mirrors on the moon if a human didn't?................Its a fact we were on the surface and left items used for experiments we needed to leverage in order to continue the applied technology from our scientific understanding of reality and in this case relativity.

[@shaungardner311]

What a terrible public speaker!

[@dexthebs]

its like he's spent all his time being a scientist

[@KarpucMotoring]

I thought he was great

[@michaelnelson3752]

He is among my favorite............but he's speaking to an audience literate in the basic understanding of astronomy, relativity and quantum physics.......and therefore makes assumptions in order to cover such a large scale human progress of our observation and discovery of reality that if one isn't familiar with such concepts he introduces could find the listener getting lost in the process.