Dark Matter, Spacetime's Expansion, & String Theory with Neil deGrasse Tyson - Cosmic Queries

What is string theory? What would traveling at the speed of light look like? Neil deGrasse Tyson and comic co-host Jordan Klepper answer fan questions about solar system formation, dark matter, and the expansion of spacetime.

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About StarTalk:
Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!

#StarTalk #NeildeGrasseTyson

[Wexellence]

Seeing Neil giggle with joy from all these awesome questions was a treat. Thank you.

[samadams]

I'll speak up for ya Neil. While I don't know the "helicopter experts" of whom you refer, I can recount my experiences as a combat heavy lift helicopter aircrewperson, and confirm your original statement. As a general rule, helicopters "fall like rocks" (in contrast to airplanes) when they lose all engine power. As for auto-rotation, it works better on some helos, than others...but, it ONLY works IF you have sufficient altitude in which to create the necessary amount of lift before hitting the ground. Since the majority of rotary accidents occur immediately after take-off, or prior to landing, this technique is 100% useless (my VA disability rating verifies this) because there is not enough time to induce the air pillow. Yet in my aircraft, for instance, auto-rotation is still subject to elevation(atmospheric density), wind, humidity, gross weight; and if any of those conditions exceed a threshold when the power loss occurs, altitude be damned, it's going to leave a mark! When the main rotor(s) lose power they DO NOT produce enough lift to keep the helo in the air, it's the reason for having powerplants (engines) in the first place! They dont propel the helo through the air, they turn a shaft which, through transmission gearboxes, turn the main(s) & tail. Carry on...

[michaelvorster]

I have a low level to no knowledge of astrophysics and all things scientific - however I continue to listen to hours of Neil de Grasse-Tyson’s presentations and love it - each episode makes this 'science dummy' feel like I know something - my working knowledge is growing. Thank you ever so much Neil and your team. I love Chuck - he earths the programme with his highly intelligent wit and humour.

[asarogers]

@StarTalk I was just at space camp for the visually impeared in Huntsville last month and it made me so happy when you mentioned it last week!!

[MrPeterson]

Neil DeGrasse Tyson: "My measurements trump your faith"
Quote of the year!

[Th_UnKnOwN_PrO]

I love when Neil is the Star of Star Talk. THESE are the Star Talk episodes I miss. Mostly Neil talking so we can hear and feel his passion and knowledge about the universe. No one is better to listen to than Neil. Js

[mattevans-koch]

Love the "trash can" questions. Maybe they should be considered the cherries on top of the sundae of general curiosity. Thank you gentlemen for another enjoyable afternoon.

[montaguemetal]

As always Dr Tyson does an amazing job of explaining extremely diverse topics in entertaining and informative ways. I have become totally addicted to watching StarTalk

[danielwelch]

I love looking into the background behind Dr Tyson. There's always really interesting things.

[MaryAnnNytowl]

This is one of the most interesting episodes I've seen in a very long time! Thanks!

[catherinetoomey-flynn]

Can't wait to check out the Mr Tomkins series. I take Neil's book recommendations seriously. I purchased the Timelines of World History book as a result of Neil mentioning it and my son loves it. He has a thing for reference books such as encyclopedias, atlases etc. Really appreciate any book recommendations on here.

[mmare]

What an amazing show, thank you very much from London, UK. I've learnt so much today.

[EvEAbYss]

i LOVE the passion that Neil deGrasse Tyson has!!! I wish more people shared this, about anything, ... er, anything intelligent preferred lol. THANK YOU for the inspiration and

[garnetmcbride]

Jordan is a great co-host. I look forward to him co-hosting often

[Sabrina]

I enjoyed this so much. I've been listening to Star talks so much lately throughout the day and fall to sleep listening.

[joecachia]

Big fan of NDT . Even got my 9 yr old daughter hooked on him. Across the pond from little Malta.

[Czechbound]

Lord knows how someone can give this free, highly informative channel a thumbs down. Bizarre !

[sapelesteve]

Great Q & A Neil & Jordan! I am still waiting for Neil to design a T-shirt with a circular picture of a multitude of galaxies that says "Keep Looking Up"! Now that would be out of sight! 👍👍😉😉

[MajCyric]

Yes.. It's Jordan again.. I love his angle of humor..

[Thegreat]

Thank you Neil for explaining that space can expand faster than light! I've always thought so.