The Gravity of the Situation: Crash Course Astronomy #7

  Рет қаралды 1,565,041

CrashCourse

CrashCourse

Күн бұрын

Пікірлер: 1 200
@Pyrex92
@Pyrex92 10 жыл бұрын
If I was a science teacher, I would feel compelled to show each of these videos for 10 minutes per class. They're amazing
@KhanPiesseONE
@KhanPiesseONE 10 жыл бұрын
they do in australia
@Fr0st1s
@Fr0st1s 10 жыл бұрын
Khan Piesse You guys are so lucky!
@KhanPiesseONE
@KhanPiesseONE 10 жыл бұрын
Fr0st1s Well, I thought that was normal, they put up Science, History, Math or English videos from the State Governments eLearn systems, or KZbin, go through it with us, then we do the normal school stuff like typing our assignments and notes and points and study guides on our laptops, that data helps us complete our course assignments for each semester, the data is imputed to the National OneSchool system which pretty much governs all public schools in Australia, It's quite high tech when I think about it now, easier than what America and other poor people countries do.
@Fr0st1s
@Fr0st1s 10 жыл бұрын
WOW! Australian school system looks so advanced. Now to think of it, I feel like I finished school in stone age, compared to you :) Even today education system in my country looks is poor.
@KhanPiesseONE
@KhanPiesseONE 10 жыл бұрын
Fr0st1s What country is that?
@BriWhoSaysNi
@BriWhoSaysNi 10 жыл бұрын
Suddenly I'm actually glad I took AP Calc because when he started talking about the rock that started at escape velocity getting slower and slower but not stopping I was like "Oh, you mean a limit?" and it made the whole concept easier to get. So much for never using it. lol
@emmettdel
@emmettdel 10 жыл бұрын
You're an awesome teacher! I love how engaged you are, it makes me feel like I'm watching Bill Nye again
@moumenaabdalla8396
@moumenaabdalla8396 4 жыл бұрын
hahaha, he is my best astronmy teacher . kareem mostafa
@charleslarue792
@charleslarue792 10 жыл бұрын
If I might make a recommendation, oh fellow astronomer, I would suggest more graphics for things like the shapes of orbits and whatnot.
@megashley1963
@megashley1963 10 жыл бұрын
I agree. I understand everything he was talking about, but that is because I already knew this stuff. If I were unfamiliar with orbital mechanics the lack of visuals could be really confusing.
@gandalfthegrey2171
@gandalfthegrey2171 10 жыл бұрын
my thoughts exactly
@observant6953
@observant6953 6 жыл бұрын
I never understood this KZbin thing of a video in which you only see a person talking to you. Completely ignores everything that would be possible with video.
@IMVADER2
@IMVADER2 10 жыл бұрын
Astronomy class was one of the few I looked forward to in high school. Classroom in a planetarium every day, watching the stars spin by while listening to Stairway to Heaven...this isn't like my class, but it's kept me as interested as I have been in that room for my high school career. Really glad I found this series from the start, and I won't be stopping until you guys do, which hopefully is in a VERY long time :)
@sonalirai3264
@sonalirai3264 6 жыл бұрын
6:17 that part was funny like “I hope you kissed your rock goodbye because it ain’t coming back” I like Phil he is funny
@Manish-nj6jo
@Manish-nj6jo 10 жыл бұрын
Your videos are highly educational. You and the rest of the crash course team make education fun and interesting to learn. Keep it up. Don't forget to be awesome crash course.
@Woodenfan
@Woodenfan 10 жыл бұрын
This brings me flashbacks to physics. Gotta say, I got more out of this video than an entire lecture or two of physics on gravity.
@Woodenfan
@Woodenfan 10 жыл бұрын
I'm in college dude xD
@Woodenfan
@Woodenfan 10 жыл бұрын
I changed to IT.
@sayuas4293
@sayuas4293 10 жыл бұрын
This is all really basic, I was hoping for more advanced stuff.
@Woodenfan
@Woodenfan 10 жыл бұрын
I bet he'll build upon this stuff later on :) Probably going to be a 30-40 episode series, so what I said seems plausible
@kadehernandez4619
@kadehernandez4619 10 жыл бұрын
Sayuas It is, but I'm sure we'll get into the good stuff later on. Actually explaining what gravity is is more astrophysics, which I'm sure he'll get into later on.
@annamattos8627
@annamattos8627 5 жыл бұрын
OMG, I love that Douglas Adams definition of flying. I have been laughing with it for years and now I know why it is also cientifically accurate. Thank you!!!
@headrockbeats
@headrockbeats 10 жыл бұрын
Easily my favorite Crash Course series so far. KEEP IT UP!
@Lee_yourboylee
@Lee_yourboylee 10 жыл бұрын
Great job guys, this is proving to be another wonderful CC. They enrich my life immensely. Genuinely can't thank you enough.
@bertwimlore7740
@bertwimlore7740 6 жыл бұрын
For me, this is more informative on the topic of Astronomy than even the Cosmos series. Home. Freaking. Run. Phil, you da man.
@rosebud1669
@rosebud1669 6 жыл бұрын
I really wish he would do a series showing how to actually measure and calculate luminosity, distance between celestial objects, blue/red shift, etc. In simplification, it would be amazing if he had a series specifically dedicated to cosmology.
@pizzael
@pizzael 10 жыл бұрын
I love his explanations for things! Just when I'm about to feel like I can't wrap my head around it, he says something that will simplify it :). Go Phil!
@darkmatter3538
@darkmatter3538 9 жыл бұрын
4:29 I IMMEDIATELY Thought of Toy Story when he said that Woody: THAT WASN'T FLYING! THAT WAS FALLING WITH STYLE!!!
@feynstein1004
@feynstein1004 6 жыл бұрын
Me too :)
@xaniel6639
@xaniel6639 5 жыл бұрын
are you okay?
@jonroskilly3983
@jonroskilly3983 10 жыл бұрын
Best Crash Course Astronomy so far, really looking forward to the next ones!
@ScienceAsylum
@ScienceAsylum 10 жыл бұрын
Hey! I uploaded a science video back in July with this same exact title! ...great minds think alike?
@feynstein1004
@feynstein1004 6 жыл бұрын
Whoa, dude. Fancy seeing you here. :)
@BillWestlakeCraft
@BillWestlakeCraft 9 жыл бұрын
I have watched a lot of these crash course, and this is one of the best I have seen. You teach very clearly, and have a very engaging style. My hats off to you sir!
@stenbak88
@stenbak88 10 жыл бұрын
I'm starting to get into astronomy, thank you for that Phil, keep on keepin on
@chamelikasamarakoon6213
@chamelikasamarakoon6213 Жыл бұрын
you are the best teacher who teach astronomy science
@carterwilliamson8504
@carterwilliamson8504 10 жыл бұрын
Looks like we're going to learn about gravitational lensing!!!! Fun
@TheAraz95
@TheAraz95 10 жыл бұрын
This is awesome! I loved you badastronomer channel since day one!
@WrathOfMega
@WrathOfMega 10 жыл бұрын
So what you're saying is; the moon is literally just falling at the Earth and missing. Weeeeird.
@Cosmalano
@Cosmalano 10 жыл бұрын
Yes. Not weird, truth.
@WrathOfMega
@WrathOfMega 10 жыл бұрын
electrocat1 the truth can be weird.
@jonathan0225
@jonathan0225 10 жыл бұрын
can you guys clarify how it maintains its orbit if gravity is bound to pull it in? What causes that orbiting suspension? sorry for this question, i really haven't got into science that much because of my chosen course.
@Cosmalano
@Cosmalano 10 жыл бұрын
If you think about it in terms of general relativity, then there is just a line in space time that wraps around the Earth that the moon is following. But thinking from the way described here, the moon is falling towards the Earth. Imagine throwing a ball so far that it goes around the apparent "edge" of the Earth. You would see the ball come back around as it continued to try and fall, only to miss the Earth by the time it gets to a height where it would normally land. This perpetual falling is how the moon stays in orbit, just farther away.
@jonathan0225
@jonathan0225 10 жыл бұрын
So then, what's keeping the moon from falling? in terms of force that is.
@foregtablename
@foregtablename 9 жыл бұрын
just started watchin' this, had a lecture about gravity and black holes today and saw it is exactly a year since this video was posted. Thankyou, crashcourse, for making Astronomy videos :)
@sindrebrve7893
@sindrebrve7893 10 жыл бұрын
Can you start Crash Course: Geography Pleeeeeeeeeease I'll give you 50% of the views
@sindrebrve7893
@sindrebrve7893 10 жыл бұрын
+ i did not write first so you should do it
@RBuckminsterFuller
@RBuckminsterFuller 10 жыл бұрын
kake pynt If you're 50% of the views that means they only got 2 viewers. That's not a very good incentive. Maybe they should make a crash course math/statistics instead.
@sindrebrve7893
@sindrebrve7893 10 жыл бұрын
Heard of refresh.........
@Cosmalano
@Cosmalano 10 жыл бұрын
That would mean they would get two views.
@abeta201
@abeta201 10 жыл бұрын
Haven't you ever hear of CGP Grey?
@TheDarkBrethren
@TheDarkBrethren 9 жыл бұрын
These episodes are amazing. Thank you so much for broadening my, and many other people's minds. Space is so fun and helps with perspective. Thank you :)
@raiseaglass1607
@raiseaglass1607 10 жыл бұрын
Crash Course Physics!
@edwardmcdonagh7309
@edwardmcdonagh7309 10 жыл бұрын
might have to be more specific, after all, everything is physics!
@raiseaglass1607
@raiseaglass1607 10 жыл бұрын
Edward McDOnagh Yes, I am quite aware of that fact. However, Physics textbooks do exist. How else am I supposed to explain that?
@tenaciousdean6179
@tenaciousdean6179 10 жыл бұрын
McKenzie Banner This is physics. You will have to be more specific.
@sajidmahmud7945
@sajidmahmud7945 7 жыл бұрын
It is available now!
@aronious291
@aronious291 5 жыл бұрын
why do they never discuss terminal velocity when gravity is discussed
@missmurrydesign7115
@missmurrydesign7115 6 жыл бұрын
This man is brilliant...
@gabrielrangel956
@gabrielrangel956 10 жыл бұрын
There should be a Crash Course Maths, or rather, Crash Course Calculus, Crash Course Linear Algebra, so on. Why is it that there's no Crash Course on Maths?
@edwardmcdonagh7309
@edwardmcdonagh7309 10 жыл бұрын
i think crash course calculus would only be good for a few episode, i can't imagine a level and degree level maths making great youtube videos but id love a mathematics series
@gabrielrangel956
@gabrielrangel956 10 жыл бұрын
I wouldn't expect them to delve in deep but single-variable calculus is reasonably simple. It may as well be Algebra or a particular topic of Algebra.
@danheidel
@danheidel 10 жыл бұрын
Crash Course has a limited amount of resources to make videos. It's possible they'll get to math some point in the future. Khan Academy and plenty of other websites have lots of good math videos right now if you are interested in that.
@gabrielrangel956
@gabrielrangel956 10 жыл бұрын
Dan Heidel I don't think it's more expensive than their usual videos. There's MIT Open Courses also, it's just a thought really.
@Emma-fn4rs
@Emma-fn4rs 10 жыл бұрын
That would be great! I'm not in calculus yet, so it would be great to get a head start!
@josephcallahan1664
@josephcallahan1664 2 жыл бұрын
Great job! I will be using this soon under the gravity of the requirements as an instructor.
@FewVidsJustComments
@FewVidsJustComments Жыл бұрын
How do Star Wars characters always have seemingly normal gravity in spaceships?
@DanThePropMan
@DanThePropMan 10 жыл бұрын
Hey Phil, just wanted to say that I think you're killin' it with this host gig. Keep up the good work!
@Numbuh1NerdX
@Numbuh1NerdX 10 жыл бұрын
Ironically enough, I'm supposed to be writing a book report on Hitchhiker's Guide to the Galaxy right now.
@raythegardener
@raythegardener 10 жыл бұрын
I love that the one source you quote within the video is Douglas Adams. I get most of my scientific understandings from his writings too.
@drink15
@drink15 10 жыл бұрын
This video should be included in KSP.
@raulgcf1
@raulgcf1 10 жыл бұрын
All I have to say is that you guys are f***ing awesome for posting all this incredible info in an easy to digest format for everyone!!! keep it up you guys rock.
@Linkous12
@Linkous12 10 жыл бұрын
You'll probably discuss this in the next video, but wouldn't it be better to say that gravity *is* the warping (curvature) of space, rather than it *does* warp or curve space?
@Zerepzerreitug
@Zerepzerreitug 10 жыл бұрын
baby steps Matt. baby steps. Remember that many out there still struggle remembering the names of the planets.
@alucardwhitehair
@alucardwhitehair 10 жыл бұрын
Arturo Gutierrez That sickens me.
@tobywilson
@tobywilson 10 жыл бұрын
This was my one nitpick of the video. Gravity IS the warping of space-time, is doesn't cause it. A subtle difference that doesn't make the video any more confusing to people who are struggling, but makes it correct.
@julessmith2
@julessmith2 10 жыл бұрын
Crash Course and Bad Astronomer mash up is the best idea ever, thanks so much for these videos.
@1994fishcake
@1994fishcake 10 жыл бұрын
How about Crash Course Engineering (Mech,Electrical, Aero etc)?
@JacobShepley
@JacobShepley 10 жыл бұрын
those are pretty horrendously open fields of study that cover applied science in general
@KASASpace
@KASASpace 10 жыл бұрын
Jacob Shepley Not per se... mechanical engineering is all about loads on structures. That and temperature. So a quick video describing how maximum loads are calculated would be nice.
@liamfris256
@liamfris256 9 жыл бұрын
Phyyyyyyyyyyyyyyssssssssssssssiiiiiiiiiiiics
@garethdean6382
@garethdean6382 10 жыл бұрын
Very attractive presentation here dealing with such weighty matters must have been a massive task.
@explosivebrickstudios2693
@explosivebrickstudios2693 4 жыл бұрын
Did I seriously just watch a class?!!?? This was soo entertaining
@piemaster6512
@piemaster6512 10 жыл бұрын
Love this series
@beleafer22
@beleafer22 8 жыл бұрын
THESE VIDEOS ARE FUCKIN AWESOME!!!!
@davidduffy9806
@davidduffy9806 8 жыл бұрын
Wonderful! Again I have learnt something new and have had my memory refreshed!
@ruolbu
@ruolbu 10 жыл бұрын
soo much of your explanations about orbits could have used simple graphics imo. Seriously I don't think I could've followed without ksp.
@tobithedestructor9129
@tobithedestructor9129 10 жыл бұрын
it's nice that you take your time to teach us all this. I guess that's partly why I like CrashCourse. Thank you so much Phil!
@sheepwshotguns
@sheepwshotguns 10 жыл бұрын
here's a silly question. what is the escape velocity of the universe :)
@marlonivancarranzabarrient787
@marlonivancarranzabarrient787 10 жыл бұрын
where would you be escaping to?
@pegeman1510
@pegeman1510 10 жыл бұрын
As they always say in the science class, "no question is silly". The escape velocity of universe depends on which direction you want to escape and what gravitational force is in your way. If earth is the only object then your escape velocity is more than 11km/s and if there are more planets then you calculate the gravitational force according to the angle of the gravitational force minus the gravitational force of the planets ahead of you (which are pulling you in) according to their angle compared to your position.
@AllanDawnsun
@AllanDawnsun 10 жыл бұрын
there's no length, breadth, height, or time, or anything outside the universe, so yea...and the universe is expanding at pretty darn fast rate..theories say that going to the edge of the universe doesn't really take you to the end, in fact, if you keep going, you'll reach where you've started. kinda like going around the earth..
@pegeman1510
@pegeman1510 10 жыл бұрын
True, but I'm talking about normal conduction, which is universe is not moving or expanding and all the mass in the universe does not change or move. Same calculation as when we calculated the force at which two or multiple protons place on one another. In physics class when we calculate two trains moving towards each other, we are not considering the air resistance, wind speed, and friction. It makes the calculation hard and also discourages people from understanding the basic concept.
@doubleru
@doubleru 10 жыл бұрын
I don't think it's possible to calculate the escape velocity of the universe because we do not know its exact mass. We can estimate the mass of observable universe, but that's just the portion of space 13.8 light years in all directions from Earth, and there is probably more stuff beyond that.
@Akrafes
@Akrafes 10 жыл бұрын
I've yet to say this but i feel that i must by now. I love Crash Course and triple love Astronomy courses in it. Great job over all!
@ArchOfWinter
@ArchOfWinter 10 жыл бұрын
I want the Enterprise to the left of the screen! Where did you guys get it?
@twelge15
@twelge15 10 жыл бұрын
Enterprise from original series is better.
@bluetannery1527
@bluetannery1527 10 жыл бұрын
It's a Lego set. Go check it out :)
@Dooality
@Dooality 10 жыл бұрын
I love this series. This is probably the best video yet.
@marishkaaable
@marishkaaable 8 жыл бұрын
Thank God there is CrashCourse
@prashantbisht7500
@prashantbisht7500 10 жыл бұрын
I wish i had teachers like you back in high school.Awesome videos,awesome explanation neat and well structured . Thank you.
@geraldshort16
@geraldshort16 10 жыл бұрын
Can you start: Crash Course: Mathematics. This will get tons of views.
@Lucassymons
@Lucassymons 9 жыл бұрын
Best quote ever, loved all of those books :) So long and thanks for all the fish.
@chichi-nm8kn
@chichi-nm8kn 8 жыл бұрын
Reading these comments makes me feel like I'm on the smart side of youtube. I've come along way from leeroy jenkins and the emo kid song.
@demonking86420
@demonking86420 5 жыл бұрын
Emo kid song?
@kaleba5203
@kaleba5203 10 жыл бұрын
The starting music of this Crash Course is by far my favorite
@MK.5198
@MK.5198 10 жыл бұрын
I knew all this thanks to KSP and Scott Manley.
@under_the_night_sky5380
@under_the_night_sky5380 6 жыл бұрын
Hen Barrison n
@joshnirohina318
@joshnirohina318 Жыл бұрын
i just realized a lot of the books in his table are his original works!!
@emmacloud4739
@emmacloud4739 9 жыл бұрын
BUT WHAT CAUSES GRAVITYYYYY
@ramana3349
@ramana3349 7 жыл бұрын
Excellent series.. thank you
@corporallee44
@corporallee44 8 жыл бұрын
Probably a silly question, but Planet Earth has more mass than the moon, so why does it not pull it into itself or does the Earths circular velocity throw it out? I can't think of another way to describe it.
@krebs5636
@krebs5636 8 жыл бұрын
well, the moon was formed after the earth collided with an object of roughly the same format. Maybe the millions of small particles (which later formed the moon) were blown into space, and were constantly falling (on 4:20 phil explains that)
@tommyfinn8902
@tommyfinn8902 8 жыл бұрын
Arnold Robert Lee The Moon is orbiting the Earth. Just like the Earth is orbiting the sun. So the reason the moon doesn't crash into the Earth is the same reason the Earth does not crash into the sun.
@ramsescoss5924
@ramsescoss5924 8 жыл бұрын
Arnold Robert Lee The moon doesn't crash into earth because the gravity of earth and the gravity of the sun mame the moon stay in the middle
@feynstein1004
@feynstein1004 6 жыл бұрын
For anything to fall down to earth (assuming the earth is motionless), all of its momentum (motion) has to be toward the earth. Consider the example of the ball. If you drop a ball from a height, all of its motion is in the downward direction (toward the earth). But if you give it a sideways push, it will still fall down but will land in a different spot because its motion is now in two directions: one is vertically downward toward the earth, the other is sideways, away from the earth. It just so happens that in this case, the downward motion is more powerful than the sideways motion. Hence the downward motion eventually wins and the ball hits the earth. However, if you give it enough sideways motion, the two motions will balance each other and the ball will get stuck. Its downward motion tries to bring it toward the earth but its sideways motion tries to take it away from the earth. And since the two are equal, the ball ends up doing neither. In other words, its distance from the earth doesn't change, which happens to be the definition of a circular orbit. I hope this helps. Btw things are a bit more complicated in reality because there are many more forces involved but this is essentially what happens. Hope this helps.
@mathematicianjeff8358
@mathematicianjeff8358 6 жыл бұрын
Free falling in space. That is a great explanation. I liked this video a lot!
@SOLACEISHERE
@SOLACEISHERE 8 жыл бұрын
What would happen if objects gravity didn't extend out into the universe forever like they do now? Would anything change would we notice?
@Sam-oz8pn
@Sam-oz8pn 8 жыл бұрын
Depends on how the gravity dissipates.
@kristygillespie5039
@kristygillespie5039 6 жыл бұрын
If all of the universe had gravity we would crash into other planets duh
@kcsrec8
@kcsrec8 5 жыл бұрын
I love this Crash Course series. So informative...
@seanyworny104
@seanyworny104 8 жыл бұрын
I don't want that rock to escape:(
@fenmilosoft
@fenmilosoft 8 жыл бұрын
How dare you tell that rock what to do! Rocks have rights now! how don't you know this! have you been living under a ROCK! I'm so sorry.
@eugeneharold5005
@eugeneharold5005 4 жыл бұрын
lol
@vanhovemare
@vanhovemare 6 жыл бұрын
just starting to view this. May I say that this is awesome? Thanks!
@GrubbJunker
@GrubbJunker 10 жыл бұрын
Phil, you should have dressed as a princess yourself =( Nice video though ;D
@davidcarmer4476
@davidcarmer4476 10 жыл бұрын
Phil, you always make this stuff so interesting. Great stuff.
@MaryJane-bo6lj
@MaryJane-bo6lj 7 жыл бұрын
SPOILER ALERT Gravity isn't a force. It's all about curves ;) EDIT: Sorry guys, a lot of what you deliver is great and of a high quality standard, but this was just poor. I'm sure this video was aimed for a particular audience but you could at least mention that the best theory of gravity we have (Einsteins Relativity no less) demonstrates that Gravity isn't a force and that its really about the curving of what can be thought of as a 4D mathematical space and then reassure viewers to just think of it as a force for the sake of this video (you know, to keep things simple). When you mentioned that gravity warps the space around it, close, but that would be that mass warps spacetime (relativity again). For those interested to know, gravity is NOT a force and really everything just moves in straight line vectors within the curvature of spacetime - spacetime being curved by MASS. Gravity doesn't bend light, mass bends spacetime and photons still travel in straight lines within a curved space (not light travelling in curves in a flat space). Also, please excuse my avatar, I am a liberal and believe in peoples right to choose. Although I don't partake as much as I once did, it was blazing that got me fascinated and literally opened my mind to theoretical physics... dude.
@Nyt250
@Nyt250 9 жыл бұрын
Finally a proper explanation in the difference between mass and weight, THANK YOU
@Cosmalano
@Cosmalano 10 жыл бұрын
The escape velocity of what is 11 km/s? You're saying that a marshmallow and a sport stadium would need to reach the same velocity to escape Earth's gravity? I guess it has to do with the acceleration due to gravity. Never thought that the escape velocity would be the same for all masses ("escape acceleration" would be different though I do believe).
@edwardmcdonagh7309
@edwardmcdonagh7309 10 жыл бұрын
yeah, but the force to be exerted on the stadium would have to be a lots greater than the marshmallow
@199NickYT
@199NickYT 10 жыл бұрын
Yes! But see, as he described with regards to mass, it would take a LOT more energy to get a stadium collectively up to 11 km/s than a marshmallow up to 11 km/s. Think about it this way: Voltron rockets off of Earth to its escape velocity of 11 km/s. Then, Voltron stops accelerating. At this state, the Cats-Bot is shooting away from the Earth without needing to speed up any more. Then, Voltron separates. What speed is each of the five wildcats traveling at? That's right, they're each still traveling at 11 km/s away from Earth! The speed of an object is not the same as the energy put into it. The speed is related to the energy put into an object, as well as the mass of it. P.S. BY THE WAY, Earth has an atmosphere. Even though you can build a marshmallow shooter that can pop out marshmallows at 11km/s, the marshmallow slows down due to air resistance far before it can escape the atmosphere. And shooting the marshmallow away from the Earth at a higher speed so that it would slow down to 11km/s when it reaches the edge of the atmosphere...would vaporize the marshmallow before it even got there. :(
@seigeengine
@seigeengine 10 жыл бұрын
This is for the same reason that if you drop two things of different masses they fall at the same rate.
@Cosmalano
@Cosmalano 10 жыл бұрын
They are following tandex lines?
@Cosmalano
@Cosmalano 10 жыл бұрын
Nick V the acceleration a mass would need to experience so that it had enough energy to escape Earth.
@afafalwan1515
@afafalwan1515 8 жыл бұрын
everything i learned about science at school this year in one video ! wow
@docopoper
@docopoper 10 жыл бұрын
A Zillion light years away is older than the universe, so the earth's gravity wouldn't have reached there yet. :P
@iluvDNA100
@iluvDNA100 10 жыл бұрын
You're right, the "Speed of Gravity" must = c. It's almost proven, all we have to do is find the Graviton...
@docopoper
@docopoper 10 жыл бұрын
Joe Seph Well if that wasn't the case then you could use gravity to send information faster than light.
@acemcbeanpiff
@acemcbeanpiff 10 жыл бұрын
docopoper Well, probably? But why would we need FTL communications before some kind of FTL or Near-FTL form of propulsion? I guess it would fix the problem of Time Delay for a while, but it isn't that.. well, useful
@MrQwerty2524
@MrQwerty2524 10 жыл бұрын
A zillion light years is an distance, not a period of time. You are confusing it with looking back in time when observing a star that is a certain amount of light years away.
@ghuegel
@ghuegel 10 жыл бұрын
How many zeroes are in a zillion?
@johanneszwilling
@johanneszwilling 10 жыл бұрын
Best Video yet in this course
@mujii_22
@mujii_22 8 жыл бұрын
wait we live on a planet, i thought it was the earth?
@theutopianoutopioan464
@theutopianoutopioan464 6 жыл бұрын
Gunflower, Earth is a planet! So are Mercury, Venus, Mars, Jupiter, Saturn, Uranus and Neptune, as well as thousands of similar bodies orbiting other stars
@PickyMcCritical
@PickyMcCritical 6 жыл бұрын
+The Utopiano Utopioan I think it was a joke. Hard to tell online tho :)
@kudos4201
@kudos4201 6 жыл бұрын
We live in a society
@Mohamed-jv6nv
@Mohamed-jv6nv 5 жыл бұрын
No!!! We live on land. God why are these people so stupid?
@dreyfusslugado
@dreyfusslugado 10 жыл бұрын
yay! you used one of my favorite Douglas Adams quote for describing orbits!
@harshitsinghai1395
@harshitsinghai1395 8 жыл бұрын
I hope you kiss him goodbye first because it ain't coming back
@sangeethkumarkotagiri2925
@sangeethkumarkotagiri2925 8 жыл бұрын
thanks!nice video it has cleared my all doubts
@unvergebeneid
@unvergebeneid 10 жыл бұрын
Wow, I didn't find anything to nitpick this time. Everything was really carefully phrased. Actually, it almost sounded a bit forced ... hey, that was a joke! It was a joke, ok?
@Cosmalano
@Cosmalano 10 жыл бұрын
I didn't think it was that great.
@unvergebeneid
@unvergebeneid 10 жыл бұрын
electrocat1 I'm not keeping _you_ from nitpicking if you found loads of stuff.
@LughSummerson
@LughSummerson 10 жыл бұрын
Maybe a bit forced, but he's dynamic and attractive.
@MidwestHippies
@MidwestHippies 10 жыл бұрын
Next on CC Astronomy ...Meteor showers!!! Yeah? Can we get that maybe? Next after Tides that is. That should be a good episode :) This series is awesome, I love it!
@MrCaptainPatters
@MrCaptainPatters 8 жыл бұрын
FUCK, I JUST REALISED SPACE IS CALLED SPACE BECAUSE ITS EMPTY SPACE WHY DIDN'T THEY TEACH THAT SHIT IN SCHOOL ARRRRRRRRRGH FUCK MY LIFE UGGGGGGGGGGGGGGGGH
@afafalwan1515
@afafalwan1515 8 жыл бұрын
Same XD
@jackcondas202
@jackcondas202 7 жыл бұрын
Space isn't empty at all... Like at not even close to being empty, lmao
@yacinetharrafi7281
@yacinetharrafi7281 2 жыл бұрын
This video really helped me. Thank you very much!
@fringeofdestiny1247
@fringeofdestiny1247 8 жыл бұрын
GRAVITY, DONT MEAN TOO MUCH TO ME
@sophiaz907
@sophiaz907 8 жыл бұрын
OMG YESSS
@FunkyHonkyCDXX
@FunkyHonkyCDXX 10 жыл бұрын
Best episode yet. Way to take a potentially complicated subject and make it very understandable.
@coolaid4132
@coolaid4132 7 жыл бұрын
"What goes up, must come down" *NOBEL PRIZE AWARD*
@blighboy1
@blighboy1 10 жыл бұрын
I just want to say I love these CCA videos. I'm usually unfairly cautious towards non-Hank/John presenters, but Phil is great.
@kwickiesparticuss9964
@kwickiesparticuss9964 5 жыл бұрын
Wow this was mind boggling. I've watched this 5 times back to back.
@terraflops
@terraflops 10 жыл бұрын
i enjoyed this video and the graphics really helped me. more graphics the better. i understand the gravity weakness inverse ratio better than before due to the graphic. Thanks.
@BeanSprouts02
@BeanSprouts02 7 жыл бұрын
Wooow. This is actually great. I remember last year where we talked about the difference between mass and weight in class. One of my classmates said that mass is weight not influenced by gravity while weight is mass influenced by gravity, and my teacher agreed. Wew. Don't know how that happened. Good thing I watched this vid. Thanks
@sumanapain6894
@sumanapain6894 4 жыл бұрын
I really love your classes sir... God bless you...
@vrstovsek
@vrstovsek 10 жыл бұрын
This was a great episode!
@Mastro_
@Mastro_ 10 жыл бұрын
Make videos forever pls. Love these
@phatamgiang8148
@phatamgiang8148 7 жыл бұрын
Thank you for a great explanation. It helps me understand more about gravity. I wish you make a video about vectors in one dimension and then two dimension. Once again, thank you for a great lesson.
@Brandon_The_Honored_One
@Brandon_The_Honored_One 10 жыл бұрын
I love these videos!!! Knowledge is power!!
@wanderlustlovelace
@wanderlustlovelace 10 жыл бұрын
Wow, this is the third time someone has explained this to me in less than 12 hours! First my physics teacher, then Randall Munroe in What if, which I was reading during my lunch break and now Phil... I'm sure not going to forget this any time soon : )
@DM-pz5ip
@DM-pz5ip 9 жыл бұрын
excellent job! More more more!!
@OdysseyWorks
@OdysseyWorks 10 жыл бұрын
Wow love these series! You rock hard!
@jim409
@jim409 Жыл бұрын
Superb class
@richiereynaga5091
@richiereynaga5091 10 жыл бұрын
What a great weight loss strategy!
@nikkievanson2279
@nikkievanson2279 2 жыл бұрын
I'm the owner of the profiles son and we home school. These videos are the best! I love these.Every time my mom says to watch a video on something I ask for a crash course vid! Bye!!
Tides: Crash Course Astronomy #8
9:47
CrashCourse
Рет қаралды 1,7 МЛН
Black Holes: Crash Course Astronomy #33
12:26
CrashCourse
Рет қаралды 2,7 МЛН
So Cute 🥰 who is better?
00:15
dednahype
Рет қаралды 19 МЛН
Support each other🤝
00:31
ISSEI / いっせい
Рет қаралды 81 МЛН
coco在求救? #小丑 #天使 #shorts
00:29
好人小丑
Рет қаралды 120 МЛН
小丑女COCO的审判。#天使 #小丑 #超人不会飞
00:53
超人不会飞
Рет қаралды 16 МЛН
Class 11: Periodic Law
7:11
manushree chemistry
Рет қаралды 4
How Gravity Actually Works
17:34
Veritasium
Рет қаралды 13 МЛН
7 Outside The Box Puzzles
12:16
MindYourDecisions
Рет қаралды 376 М.
Why does the universe exist? | Jim Holt | TED
17:22
TED
Рет қаралды 8 МЛН
Lenz's Law
15:54
D!NG
Рет қаралды 6 МЛН
Deep Time: Crash Course Astronomy #45
15:15
CrashCourse
Рет қаралды 2,2 МЛН
Gamma-Ray Bursts: Crash Course Astronomy #40
14:05
CrashCourse
Рет қаралды 1,2 МЛН
Why is the speed of light what it is? Maxwell equations visualized
13:19
Death and Afterlife Across Religions: Crash Course Religions #17
12:32
So Cute 🥰 who is better?
00:15
dednahype
Рет қаралды 19 МЛН