Why Rockets Don't Fly Straight Up

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Why don’t rockets fly straight up? Neil deGrasse Tyson and comedian Chuck Nice explain the curious flight paths of rockets, how they get into orbit, and the Brachistochrone problem.
What are the major differences between airplanes and rockets? We discuss rocket fuel, hydrogen fuel, and when rockets execute the roll program. Learn about how rockets get into orbit and how it looks like the Bernoulli brother’s Brachistochrone problem.
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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
Timestamps:
00:00 - Rockets v. Airplanes
3:15 - Executing the Roll Program
5:42 - How Rockets Get Into Orbit
7:05 - The Brachistochrone Problem

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Опубликовано:

17 май 2024

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Комментарии : 709

@StarTalk 5 месяцев назад

Did you watch the recent Starship test launch?

@RiseOfTheNew 5 месяцев назад

No u missed it 😔😔

@Meatloaf_TV 5 месяцев назад

I did and me and my friends collectively lost our minds it was one of the coolest rocket launches I have ever seen This and other rockets are what inspired me to do aerospace engineering in college right now

@Zbezt 5 месяцев назад

In my observational understanding it was perfect aside from some electrical issues from possible internal condensation

@Meatloaf_TV 5 месяцев назад

@@Zbeztfar from it something went seriously wrong with the engines on the booster after hostage and we still don't know why starship was terminated

@Zbezt 5 месяцев назад

@@Meatloaf_TV stick to gaming and programming its evident you cant see through walls without an algorithim assist

@beau-urns 5 месяцев назад

Sometimes I realize how much Chuck has learned… dude is VERY educated on these topics now. He’s always been bright, and now he’s bright AND educated. What’s a combo

@mctuble 5 месяцев назад

The importance of having smart friends

@usaintwinnin7312 5 месяцев назад

But just memorizing what someone told you doesn’t make you educated. Maybe a little more knowledgeable, but that’s it.

@mctuble 5 месяцев назад

@@usaintwinnin7312 I definitely doesn't hurt to have people talking to you about stuff like this and making you think rather than the latest internet challenge.

@beau-urns 5 месяцев назад

@@usaintwinnin7312 he’s not memorizing. He responds to complex prompts and even when not prompted with analysis and input It’s clear he understands, doesn’t memorize. He’s also quick AF on his feet Not sure why you’re being a hater.

@jeffstorey9147 5 месяцев назад

Remember that his job is the play the uneducated role, and set NGT up to go on a rant. He’s a real pro at it too.

@aaronscott1907 5 месяцев назад

I love how profound his off-the-cuff statements are: "When you're curious and you're mathematically literate and you know a little bit of physics, these questions come up in your life, and you're compelled to solve them." Perfect wording to convey why math and science are so important in a practical sense. Great episode!

@timtim4664 3 месяца назад

@@HopDavid It is still a step in the right direction. People think Neil is a "God of Science".... which is a step above "Bill Nye the science guy". I'm just happy the common people still look for science as an explanation to the question of "why?". He may not always be correct, but he is in the right location...because a lot of people are lost.

@silentblackhole 5 месяцев назад

This is the first time I've ever heard of the Brachistochrone problem, and then when you flipped it up side down for the orbit solution it blew my mind! Loved it! Thanks guys

@RollMeOne_Kenobi 5 месяцев назад

Vsauce has an excellent video about it where he goes way in depth and it honestly only gets more mind blowing lol

@Svensk7119 5 месяцев назад

Me too! Well done, doc!

@stephenselby4252 5 месяцев назад

Hang on. For going up, wouldn’t the rocket gain more velocity going sideways first and then flipping upward? But then it would have to overcome the friction of the denser air on the surface. Is the Brachywhatever really relevant?

@michaelslee4336 2 месяца назад

The Curiosity Show with Rob and Deane (in Australia) from when I was a kid did this, mind blown even back then.

@falklumo 28 дней назад

@@stephenselby4252The goal is not for going up but going fast. Velocity is where the energy is needed for, height is nothing (less than 1%). But you also need the right direction if not going to the moon. And you’re right, you need to be out of atmosphere as quick as possible too or you just melt …

@hidasineto 5 месяцев назад

The new "edited" videos are much better than the past non-edited videos. Please, keep investing on that. Love you guys! Been watching you since the big bang

@BJSMOOVEyt 4 месяца назад

13.8 billion years plus?!

@gm2958 Месяц назад

Except they would be much better without the added “music”.

@RandomInTheChat 5 месяцев назад

Hi guys! It's RJ,while I was watching this video I noticed something I found very relatable so I figured I'd share my thoughts and findings with you and absolutely excited to do so.I've been skateboarding for going on 30 years and I can confirm that dropping in ( rolling down) a quarter pipe ( quarter circle ramp) one definitely obtains more speed than if one was dropping in on a bank ramp (triangle ramp) that is the same height so long as all other variables are the same ,no matter what human powered vehicles happens to be their psychotic hearts desire from bikes to scooters,roller blades and my personal favorite skateboards the results are the same. As a long time and multiple account subscriber ( not great with passwords lol) and lifetime learner I want to thank you both for making learning fun and things like science and physics approachable not just for myself and my 4 boys but for so many others Thank you Neal, Thank you Chuck .I hope that you two continue to do what you do for many years to come!

@RiseOfTheNew 5 месяцев назад

Love watching star talk. Learn, laugh and get my mind blown everytime ❤❤❤

@michaelccopelandsr7120 5 месяцев назад

As it should be ;-P

@petergreen5337 5 месяцев назад

Well said

@nagasreekanth7178 5 месяцев назад

The Brachistochrone Problem is the coolest thing ever I heard in this channel

@jesperlett 5 месяцев назад

The reason for the brachistochrone curve in space flight is not immediately obvious, however. The reason to go vertical in the beginning is to get clear of the dense atmosphere as quickly as possible to reduce drag.

@VonJay 4 месяца назад

I’d argue that the brachistochrone curve in space IS immediately obvious, since the craft needs to fall towards earth and the fastest way to get that started (and for efficiency reasons) is with a curve of shortest time. The curve is not practical in heavy atmosphere, and that’s exactly what they covered.

@shrodingerschat2258 Месяц назад

KSP taught me that!

@SunilNayak714 5 месяцев назад

Lets take a moment to appreciate the effort of Bernoulli brothers 👏

@DonCarlione973 5 месяцев назад

Out of the scientists of our era I feel that Neal D. Tyson is one of the most open-minded and honest of them. He's very unbiased which is a trait of a great scientist. Nothing is impossible to him and I love how he breaks everything down for us. I have quite a bit of respect for this man I appreciate what he does and the true person that he is.

@josephmarino2654 5 месяцев назад

Thanks Neil and Chuck. I always enjoy StarTalk.

@sapelesteve 5 месяцев назад

Terrific explainer Neal! Like many others, I never knew the exact way a rocket was launched into space. Thanks & I hope that you, Chuck & your families have a terrific Turkey Day & Happy Holidays. 👍👍🦃🦃🌲🌲

@Famezonen 5 месяцев назад

7:17 never ent to college. But Neil will always be my fav teacher. Mind boggles me in every video.

@nickdsp8089 5 месяцев назад

For those wondering how they came up with the word 'brachistochrone'. It is from 'brachis' = 'βραχύς' in greek and its meaning is 'sort' combined with 'chrone', 'chronos' from the greek word 'χρονος' which translates to 'time'. Βραχυχρόνιο = sort time. We use this word even in the modern greek.

@jpdemer5 5 месяцев назад

Not βράχιστος χρόνος?

@nickdsp8089 5 месяцев назад

@@jpdemer5 maybe superlative but not used

@Paolo_De_Leva 5 месяцев назад

_"A _*_brachistochrone curve_*_ (from Ancient Greek βράχιστος χρόνος (brákhistos khrónos) 'shortest time')..."_ From Wikipedia (en.wikipedia.org/wiki/Brachistochrone_curve)

@nickdsp8089 5 месяцев назад

@@Paolo_De_Leva it is like : good, better, best as i said βράχιστος is superlative of ΄βραχύς not a completely new meaning. Ιnstead of βράχιστος we prefer βραχύτατος nowadays which has the same meaning. BTW the comperative is βραχύτερος

@Paolo_De_Leva 5 месяцев назад

@@nickdsp8089 You wrote _"maybe superlative."_ Wikipedia gives a better answer.

@6thdayblue59 5 месяцев назад

“Mike Drop” I’m in tears laughing……… Chuck is a legend. Thank you guys x

@TonyVSTheWorld 5 месяцев назад

The illustration of the Brachistocheone curve blew my mind when you flipped over!!!! Made all the sense in the world!! Crazy!

@bodan1196 Месяц назад

We Kerbals calls it a gravity turn.

@fiercefix Месяц назад

@@bodan1196Anti gravity turn !?

@newbornmaple87 5 месяцев назад

""Bernoulli Brothers were the life of the party"! 😄

@SoupedUpCustoms 5 месяцев назад

Chuck Nice really adds up a whole lot more to these kinds of explainer vids. More of this and chuck nice as well!

@henocktaddese6892 5 месяцев назад

Thank you Neil, you remind of questions we never bothered to ask, and love the mic drop! Thank you Chuck for all the fun, you never miss a beat!

@Carverman08 5 месяцев назад

Just started the episode but I know it’s going to be another great video!

@yournway 5 месяцев назад

That was certainly one of the geekiest but most elegantly explained maths translated to actual rocket science explanation I have ever heard, even on this channel. Thank you!

@Shaw_Cardboard_Treasures 4 месяца назад

You know the phrase it's not rocket science. Well this makes it a lot simpler to understand and explain to even a 6yr old.

@Cristianotorres1998 5 месяцев назад

Wow, that’s great to learn, Thank You Neal ! 👏🏼🙏🏼

@toon3ry 5 месяцев назад

Love and light to you and the family Neil. Condolences to you on the death of your mum❤🕊️

@flyingo 5 месяцев назад

That announcer from the Hindenburg disaster was from my hometown Wichita, KS. Just a fun fact.. well, to me anyway.

@Darren51283 5 месяцев назад

So, what do a solid fuel rocket booster and an EV battery pack have in common? Once they ignite, you can't turn them off.

@BogdanSilviuAron 5 месяцев назад

I follow a lot of scientific channels... A lot... And always learn new things or understand the new things I've learned... But in this channel I understand everyday things, that I thought I already understood, but I find out that I was wrong, or not completely correct, and after seeing your videos I completely understand them correctly. This channel it's Unique! Thank Neil and the other guy 😜

@andrewm8429 5 месяцев назад

i was just thinking about why they roll the other day! Perfect timing!

@danielludlow8960 5 месяцев назад

I love these explainers so much...I literally talk out loud like you can hear saying how awesome it is!

@diegofernandez4789 5 месяцев назад

Great explainer guys. Loved it!

@whistletutor 3 месяца назад

I've been a space nerd my whole life and I've never heard of the Brachistochrone problem and how it relates to trajectory - that's why I love Star Talk, always something to learn!

@michaelwoo4279 5 месяцев назад

Thank you for starsplaining! Love it every time!

@ra2186 5 месяцев назад

08:05 There's usually not a concept completely new to me when I watch these. This fact about rocket launches blew my mind!

@michaelccopelandsr7120 5 месяцев назад

Neil and Chuck for 2024!

@markousey5564 5 месяцев назад

Wow you guys explain and simplify the science enough to make it digestible. I love the rapport and humour making it entertaining too. Simply my favourite RU-vidrs. Thank you.

@likemeordont5951 5 месяцев назад

Thanks for letting me hang out with you guys, and you know, teaching me stuff.

@ghahrai 5 месяцев назад

Thanks Neil & Chuck . I have learned more from your explainers than i could have from a hundred books. ❤

@sosheeanand3537 5 месяцев назад

This is mind blowing explanation honestly.

@VonJay 4 месяца назад

It’s probably one of the smoothest explanations I’ve ever heard. I didn’t have to struggle to understand anything.

@Madhamz 5 месяцев назад

From one Chuck to another Chuck. Watching my two favourite shows on youtube,Inside the NBA and Star Talk.

@PedroFernandes1984 5 месяцев назад

I really love this channel. always learn something new, and the comunication is awesome! Congratulations!

@kirandeepchakraborty7921 5 месяцев назад

One of the best episode ever. ⭐⭐⭐⭐

@eldwdubu6968 5 месяцев назад

Learn and laugh with these two. Always fun, Thanks!

@thomchristensen990 5 месяцев назад

Great episode. The editing on this is superb. Thank you.

@thomchristensen990 5 месяцев назад

Also looking forward to your year in review talk on Jan 4th at the Museum. Last year was eye opening.

@mglasson 5 месяцев назад

"When the pitchforks come for Elon..." 😝

@helpus1456 5 месяцев назад

First time watching. I really enjoyed this segment. Didn't understand more than have of it. But, you two were fun to watch.

@brawlwith_me 5 месяцев назад

Nice new intro music my favourite was the first one you guys had used in older videos ❤

@BobbyJOnline 5 месяцев назад

If we had these videos when I was a Kid in the 80’s.. I’d be GLUED to the TV 24/7

@EdwardKilner 2 месяца назад

Excellent. Learned stuff. BASc EE ‘71 and still love learning. Granddaughter is new Systems Design Engineering grad, now in Masters program. Third generation Engineer. My parents never met her, but would have been delighted with her and astounded by us all.

@Stisse12 5 месяцев назад

Best Science YT channel !

@peterjackson2722 5 месяцев назад

That was fascinating, thankyou!

@RodrigoM3llo 5 месяцев назад

This video gave me a completely new perspective on explaining rocket's optimal trajectory

@GAMEOVERTBH 5 месяцев назад

Short video but gold information 😜👍🏿💯

@mattgraham5992 5 месяцев назад

Thanks again. My favorite way to start my late night.

@Shaw_Cardboard_Treasures 4 месяца назад

That was very informative. And not over my head.

@mickeybrumfield764 5 месяцев назад

Long live Neil, Chuck, and Star Talk bringing us such good information about the party oriented Bernoulli brothers and rocket science. ❤

@TheKobiDror 5 месяцев назад

Fantastic vibes between the two of you AND getting to know a little bit more each time. I didn't knew that fact and it goes straight into my useless knowledge drawer within my memory 🤓

@charlessukati4866 5 месяцев назад

Brilliant lesson from these two ❤❤❤🎉🎉🎉

@zelmoziggy 5 месяцев назад

Apparently Tyson saw the TikTok video that incorrectly asks which path is the “shortest” among three choices for a ball to roll.

@tamirleibovich 5 месяцев назад

8:33 classic Neil/chuck good vibes 😍⭐️ love you guys !

@GAMEOVERTBH 5 месяцев назад

Great information 👌🏿100%

@alafayette1100 5 месяцев назад

Love these guys so much ❤

@DJ-xu5fv Месяц назад

Best 10 minutes of my day! Thanks guys.

@SureshKesraniOfficial 5 месяцев назад

Amazing truly amazing discussion

@yaelbj 2 месяца назад

That mic drop was really good! I am very glad I watched this! 😌

@cliftonjohnson8069 5 месяцев назад

Great Star Talk!!!

@tokonjudo 5 месяцев назад

it is heart warming when you laugh at chuck for real :)

@akubuosamuel4194 Месяц назад

Today I know about brachistochrone problem and rocket trajectory. ❤❤ Thanks Sir!.

@OnceSomeFunATime 5 месяцев назад

That's the coolest thing I learned this year

@abelmedina-aispuro3716 5 месяцев назад

I can’t stop watching this episode. I love it

@davidconlee2196 5 месяцев назад

That bit about the Brachristochrone problem was pretty cool

@Goodjobeveryone 5 месяцев назад

Thank you guys!!!

@BakedPhoria 5 месяцев назад

Background music is nice for recaps but the silence is better

@jankostolany38 5 месяцев назад

exactly

@JamesWilliams-gv7zd 27 дней назад

I used to live in Titusville Florida. It was awesome to see and hear the the shuttle coming and going

@fiddlefiver 5 месяцев назад

I'm learning so much, Thank you 🎉

@petergreen5337 5 месяцев назад

❤thank you very much for this beautiful lesson

@StofftiereLindner 5 месяцев назад

Love your talks

@Bojeezy Месяц назад

Neil and Chuck need to do a standup special together. I would watch that also. Their banter is just as entertaining as the information being provided. Like they are just 2 friends talking over a cup of coffee.

@JKa244 5 месяцев назад

Launch trajectories are beautiful. Rocket, ballistic, air breathing - such a beautiful interplay between simple physics and more complex fluid mechanics

@gregkent8955 5 месяцев назад

Subject: roll at Shuttle launch: I was part of "lunch with an Astronaut" at Kennedy Space center a few years ago and it was with Chris Hatfield. "any questions?" he asked. I asked "Why does the Shuttle roll after launch?" Answer: The launch pad is facing the wrong way for Shuttle launches because it was orientated for rocket launches. The Tank needs to be on the Nader side for safe release. This concludes my 'explainer'. You and Chuck are a perfect match. Chuck keeps you from going too far by using humor. Keep 'em coming.

@kevinfletcher1999 23 дня назад

Even on topics I know something about, Neil always has some great facts I knew nothing about. He’s my favourite educator.

@jamesonrichards5105 5 месяцев назад

Neil should do a video with chuck to see how much he’s actually learned. I’ve seen some other medical channels do the same with their video editors and it’s always great to watch. Either a physics, astronomy, or general knowledge questions about space.

@KokoroInt 5 месяцев назад

This was awesome!

@joeyannece6197 5 месяцев назад

The kids in the class were watching Challenger blow up.

@VikingTeddy 5 месяцев назад

Oh yess! Thank you Neil. This will help my Kerbaling so much!

@christianmarquez3143 5 месяцев назад

Thank you so much. Love you guys.

@shantanuaphale3966 2 месяца назад

Gr8 explanation by world's greatest of educators ❤

@sherwincantago6384 20 дней назад

Thank you!.. I learned something today. 😊

@phillippolack145 5 месяцев назад

AMAZING WORK!

@BurqueMD Месяц назад

These are so wonderful, thank you!

@MedicalMyke 5 месяцев назад

Man, I love how much love you both have!

@msbudmsbud7593 5 месяцев назад

Very cool guys, thank you !!

@Grubik 5 месяцев назад

8:25 was the ooooooh moment for me how did i never think of that. I have had same feeling when i saw at some other video explanation of propeller as two sails on cylinder.

@OptemusPr1meXBox Месяц назад

Sooooooo dope!!! Thx ND-T

@pratikmali9277 5 месяцев назад

I came here thinking I’d know everything he has to say about brachistochrone (because I watched about it in Vsauce) but that thing about rocket launch trajectory blew my mind 🤯

@hassaniq0777 5 месяцев назад

@@HopDavidas a physicist, I can say we all sometimes like to make stuff up. I made this up as well

@VonJay 4 месяца назад

@@HopDavidI was trying to figure out how the b problem relates and I finally figured it out though it was plainly stated in the video. I keep forgetting, even though it was explained, that to stay in orbit you have to fall to earth fast enough to keep missing it. I think the point that confused me was the frame of reference since the shuttle is no longer trying to escape earth and is just simply trying to fall toward it. So the b. problem is really about efficiency (as stated in the video) and continuously missing earth as you’re falling toward it (as fast as possible initially).