OK not really but I've read the "rocket scientists" have been lying about how rockets work; I've learned that rocket engines don't actually work in a vacuum.
Of coarse you ask "but why would they lie, I don't understand". They lie because they're hiding the fact the Earth is flat and there is no space to travel to or in. We're inside a giant underwater terrarium and atmospheric life is an artificially created novelty.
Need proof? Differently shaped rocket nozzles produce varying degrees of thrust depending on atmospheric pressure.
A rocket scientist who doesn't know the difference between coarse and course. Hold on let me consult google so I may also sound like an expert on the matter.
Where does space start?
Most jet planes don't fly above 15km (9.5 miles, 50,000ft), where there's still enough oxygen to burn fuel in their engines and keep them flying, but that's nowhere near the start of space. Space is generally defined as starting at about 100km (60 miles) above Earth (an arbitrary point sometimes called the Kármán line), which is where conventional planes would struggle to make enough lift to stay in the air. That doesn't mean Earth's atmosphere is all done and dusted by that point; far from it! The lowest satellites (known as low-earth orbit (LEO) satellites) fly at heights above 160km or 100 miles from Earth, which is over 10 times higher than planes fly. Even so, they still feel some drag (aerodynamic resistance) from the outer reaches of our atmosphere, which fizzles on up to 800km (500 miles) or higher.
You might think space is a long way away, but a hundred kilometers is not so far: a car, hurtling along at highway speed, would take just an hour to get you there; a rocket will get there about 20 times faster—in just 3 minutes.
What is space like?
From the point of someone designing a rocket, space is the place effectively beyond Earth's reach—beyond most of its gravity and atmosphere. Although we tend to think of it as a vacuum, it's not completely empty. There's radiation zipping through it (there must be—how else would we see all those distant stars and planets?), meteorites nipping past, "cosmic dust," and even bits of space junk (broken bits of satellites and rockets). Perhaps the best way to think of space is as a place of wild extremes: emptiness, weightlessness (when you're far from any planets). One minute, deep darkness and extreme cold (when you're shaded from the sun); the next, blinding light, dangerous cosmic radiation, and extreme heat.
Is there more than one kind of space?
Mostly we're interested in the interplanetary space of our own Solar System (the area round the Sun), which is measured in distances of millions of kilometers. But space telescopes and unmanned probes also study the further reaches of what's called interstellar space (the space between stars), measured in vastly greater distances called light years (the distance light travels in one year, which is almost 10 trillion kilometers). The Milky Way galaxy, of which our solar system is just one part, measures about 100,000 light years (1 million, million, million km) across.
Space, if you haven't figured it out already, is a pretty big place!
#YoFam
