Actually, the exosphere's temperature isn't constant, and as I said earlier, there is no heat transfer because of the sparseness of molecules.
I think we're talking about the same thing. I tend to just call it the super heated portion of Earth's atmosphere. Where radiation charged debris and particles create heat. But the amount of heat created depends on the amount of debris. It normally fluctuates from 2,000 degrees to about 7,000 degrees. And it sounds like the Van Allen belt is part of the magnetosphere.
It's in there, but I think it's just contained by the magnetic field, rather than being a part of it. The Van Allen Belt is radiation, whereas the magnetosphere is a magnetic field.
1) Why is there heat shielding on space shuttles?It's in there, but I think it's just contained by the magnetic field, rather than being a part of it. The Van Allen Belt is radiation, whereas the magnetosphere is a magnetic field.
Also, objects don't heat up, just by being in the thermosphere, or exosphere, for the reason I stated earlier.
Friction upon re-entry is why there's heat shielding on the shuttles, capsules, etc., and also why meteorites burn up in the atmosphere. There's no heat shielding on the ISS, even though it's in low orbit. The exosphere is the name given to the outermost layer of the atmosphere, and the only things that won't fall to Earth even from that distance are things orbiting at a high enough velocity to counter gravity. That orbital speed is also the reason the people on the ISS are weightless. They're in a constant state of falling, but they're moving at the exact speed to stay in orbit. The magnetic field is not radioactive, it's electromagnetic.
So what is the Van Allen Belt?
Did you look at the graphic I posted?
What is the temperature in the Van Allen Belt?
I don't know what the temperature is, but you do realize there's a difference between heat and radiation, right?
Ever heard of the phrase "radiant heat"? They are basically synonyms. Anything that gets exposed to too much radiation, begins to heat up. That's how microwaves work.
Microwaves work by vibrating water molecules, and the friction creates heat. That's why food heats up, but certain materials don't.
I feel like if it wasn't the US that they wouldn't just observe, but attempt to pursue. I think if it were a foreign govt they probably would have acted.
HUD vision videos and night vision videos won't be clear. Because they use those technologies in low visibility scenarios and at night.
To our knowledge, the circumstances necessary to not only create life, but to have it thrive and evolve, is so specific, I find it difficult to believe there is intelligent life with the technology and desire to explore the universe within a close enough proximity for us to be visited. I think the best chance of that happening is if their ancestors are our progenitors. Other than that, I think the odds of being discovered this early in our existence is literally astronomical.
I think circumstances are what allow life to get going and thrive. I think the first part of life, whatever that might be, is actually everywhere or almost everywhere in the universe, when that first part matches up with the proper circumstances, the life process begins.
Not in my opinion, I fully expect that anyone/anything that can travel this far is much smarter than our *******es.
