The MASSIVE difference between orbit and sub-orbit

Are heat shields important going into space or only for re-entry?

They aren’t in space. They were in the earth atmosphere, so there’s a difference. The same for I.S.S., it’s in the earth atmosphere. If you leave the earth atmosphere, then you’ve entered space. We need to correct the terminology or the meaning of space.

Alternate title:
Billionaire having trouble keeping it up.

Funny that its a scientific fact that the earth isnt round or flat but bulges out at the poles. Funny thing is all the pictures we're fed by u and schools and nasa all show the earth round .... ALL LIES.

They wasnt in space at all. And if tgey were why didnt they have to re enter slowly . Total bullshit.

You cam do that in a plane

Possibly a dum question here. Will a gun fire in space?

The reason we have gravity itself is something that's still unknown.
It can be described perfectly yet no one knows the cause.

All very good, but I don't think you know how fast pistol and rifle bullets travel, you're off by quite a lot. But good point.

I wish to say two things:
1). The team you have assembled has resulted in your most polished video. You can easily use this video’s production value and re-establish educational passion into the underfunded science specialties.
I remember watching Wild American, Carmen Santiago, The amazing Sesame Street and Mr. Roger’s, and more.
I also envision embracing this new modern young world of social video games and foresee Kerbel being a “Oregon Trail” like phenomenon once a week in elementary school again….
2) I admire your spiritual, passion for education, self-taught intellect and most importantly….you seem to have finally balanced your health and workaholic nature to make your channel a movement for all to admire and embrace with proud vigilance.

Well done Tim and @everydayaustronaunt team!
Have a blessed day y’hall!

Umm there is not true " zero gravity"😂 only micro gravity

And there's flatearther's that do their 'research' on you tube but can't comprehend the specific and valuable knowledge this guy just gave us ....smh. this video is really good btw 👌

Trajectory. That is all.

It'd be interesting to have a full mathematical treatment of Keplerian trajectories. Because of course they're about conical sections, their focal points, and their eccentricities. How and why precisely you go from a parabolic to a circular/elliptical to a hyperbolic trajectory would be neat to see, especially in conceptual animation, like here.

I think it would be especially useful to see how the focal points of the second degree planar — or not so planar, as in transfer orbits — curve change under propulsion. I don't think anybody's done this quite right so far, and it would really illuminate orbital mechanics. Plus obviously you already came close, it's just that e.g. hyperbolic, escape orbits were completely left out.

Doing a gravity assist in a flyby would be a definite plus as well, especially if it includes an animated and narrated walk-through of the Oberth effect. I mean, that one's truly counter-intuitive even to a wannabe mathematician-physicist like me. Sure, I can jot it out in equations, but I sure as hell can't wrap my intuition around it. I'd bet most can't.

Shut up.

Sorry, I could be wrong, but why is the perigee so close to the center of the earth when the ball falls?
If I were to throw a ball into a frictionless hole through the earth, the ball would accelerate until it reaches the center of the earth, and only then would it start decelerating until it comes to a stop at the other side of the earth.
So with a little push to the side, i would think that it would already be in an elliptical orbit with the center of the earth at the center of the eliptic. Could that part of the video be wrong?
My next question would be if the perigee is still rising when you thow the ball faster and faster to the side, because the forces on the Y axis are still the same, right? At least at human scale
Thank you! I love this channel.

Space starts at 62 miles high and nothing has ever been to space because rockets can not produce thrust in a vacuum so the rocket just falls back down at the 62 mile mark and there is no weight less ness

Starship more like sh-tbox that could explode at any second.

It's a very common misconception by laypeople that the reason you are "weightless" is you have escaped earth's gravity in space. You haven't, even the moon stays in orbit around the earth due to earth's gravity, and the effects of earth's gravity goes even way beyond that.
I remember years ago when the concept of orbit and zero G finally clicked with me. I was reading a book written by a astronaut (don't recall his name) where he made the simplest demonstration. Take a ball and throw it. Notice the ball travels in a arc until it hits the ground. Now imagine you could throw a ball fast enough that its arc was equal to or greater that the arc of the curvature of the earth, and that there is no atmospheric drag to slow the ball down, you just put the ball in orbit. The reason you feel "weightless" is because you are basically in a freefall around earth. As far as the pull of earth's gravity goes, you still weigh within a few pounds of your weight standing on earth, when you are in low earth orbit.

A brilliantly informative video. Thanks so much for sharing.

Does anyone know what mods he has installed for KSP?

video in a comment:
sub orbital definition: you go up, but you dont stay up
orbital: you aim yourself at the earth and throw, but you try to miss

"Gravity pulls..." Really? If you haven't washed out that kind of pre-Einstein way of thinking about gravity out of your worl-view, I can't listen to anything else you say. Get serious, may be the algorithm will orbit you around my feed again...

You are one smart dude, Tim. You make some great and very informative videos and I love them. Keep it up man 👍🏻

Excelent video brow!

Is the game in play store

Boring! Nerd zone!

Does earth also move faster at the aphelion and slower at the perihelion in its orbit around the sun?

Was that Bell X2 pilot Matt Damon? The resemblance is surprising.

Sorry no such think as ( zero gravity), you are actually free falling back to Earth.

As a person with my user name, I see this as an absolute win.

Great video! Really. Thanks

Apollo moon landing missions were based on a 5 stage system.

there is no weight; the gravity keep us in orbit

The easiest way to experience zero-g is to go scuba diving. With the weight belt countering any residual buoyancy effects, you can just hang there. There are some residual effects from density differences, such as your lungs, and water creates more drag than floating in air, but you should get the main effect. This was a key way that astronauts got training for operating in zero-g.

Too bad Jeff bezzos actually made it back to eartj

❤

Blue Origin is little more than a carnival ride!

Here's what I don't understand: my physics prof once told us you'd weight a little bit more in Death Valley than on top on Mount Everest because in Death Valley you're closer to the center of the earth. But what if you took a sci-fi elevator straight down until you were only 10 or 12 kilometers from the center of the earth, you'd only weight a few kilos because you're almost at the center. So where exactly would your weight max out? Death Valley? A mine-shaft that goes down 100km? Very confusing.

So obviously if you were at the height of the space station and gradually slowed down to 0 orbital velocity you would basically just start to fall straight down towards earth but eventually reach speeds that by the time you hit the atmosphere you would be going so fast you would burn up. But would there theoretically be a way to essentially "hover" above the earth at the same height as the space station? So 0mph as opposed to 17,500mph but not lose altitude (fall back to earth).

because it’s a joke and a toy, there I just saves you 30 minutes

Bro, thank u 4 this! I always wanted a thorough explanation about this. Now i really get it. Amazing how in the 50's and 60's, we had human calculators, now we have computer games to simulate this.

your video would be more understandable if you were using imperial units instead of metric.

You can't teach one of the most richest men how to run a business. It's a business strategy. There must be an amazon basics tier for almost everything. Yes, I'm certained Blue Origin will survive even without fancy NASA signatures.

Because Humpty Dumpty can't keep it up.😂

The Earth is flat. The Earth does not rotate. The Earth is covered with a solid dome. We live in God's terrarium. An "orbit" is not possible.

My father was the flight engineer on the vomit comet.