Hello Chinese state-actors, I hope this message finds you well: Free Tibet! Free the Uyghurs! Taiwan is a sovereign state! The nine dashed line is bullshit! China is a capitalist fascist state!
Can I join in on this dream? Aerospace really tickles my fancy, but it feels impossible to get a job in it that's not destroying the environment and/or making bigger bombs.
Similar experience for my first time having they/them pronouns used IRL... I was mountain biking in full body armor, full face helmet, and goggles. Someone said to their kid, "let them go ahead, they'll be really fast," or something. I proceeded to hit 48km/h on singletrack, a speed I haven't replicated since. So I guess I was given a speed boost by the comment?
If I had a nickle for every cold-war era strategic bomber that crashed yesterday... I would have two nickles. Which isn't a lot, but it's weird that it happened twice.
Yeah, I'm in that boat. I did have some sugar, but it was extremely rare, and IIRC got phased out more as I got older. I don't think it was ever a hard rule of "no," but more of a "have very little except maybe on special occasions." I never developed much of a taste for sweet things to the point I quite often find muffins for scones unreasonably sweet. When I was doing mountain bike races, I had energy chews and bars. In hinds sight, that was probably a poor nutrition choice for my metabolism, and I now I simply have roasted and salted pistachios, with a sugar free electrolyte mix before and/or after the ride.
I also very much seem to be the exception here. Probably my experience more comes down to my own eccentricities. I have the eating habits and body type of a distance athlete; healthy but low weight, diet consisting largely of slow-burning foods like nuts, fruits and starchy vegetables. I am still figuring out what diet and training routine works best for me, but sugar, even as a mid-ride fuel is a hard no-go for me. I like putting in the work to be able to do extreme sports like mountain biking and snowboarding at a reasonably intense level all day long. I listen to my body and I know without a shadow of a doubt touching high sugar and certainly processed foods is not worth it by any means.
If your anything like me, that imaginary world is a horrifying character of the cyberpunk distopia we find ourselves in as a means of overt social commentary... So I'll take some laptop memory if you will.
The posts about escape velocity (or speed if you prefer) are correct. To that I want to add the following: Gravitational effects technically never end with distance, only become weaker. It's also important to note that every object has a gravitational field, it's just that it needs to be ridiculously big for the force to have any real effect. Gravitational force can be described by the following equation:
where r is the distance between the two objects, and the rest does not matter for us today.
This is the same as the inverse square law of light (this is a pretty good visual):
This means if you double the distance between yourself and a star, the strength of its light reaching you will quarter. This is also very similar to the math used to describe electric and magnetic field interactions, but I won't go into that today.
This is why scientists are able to measure gravitational waves from collapsing stars and quasars and stuff at the LIGO Gravitational Wave Observatory, just like how we can observe the light coming from distant stars. However, there is a point where the force of gravity becomes so weak as to be inconsequential, just like how at the edge of the solar system, the sun merely looks like a bright star. That is described as the gravitational sphere of influence, the rough approximation of the distance from a celestial body where it exerts the most gravitational force on a given object.
Escape speed is the speed at which an object must travel, given a distance from said body, to escape its sphere of influence. The Earth+moon have a sphere of influence of about 9.29E5 km.