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originally posted by: firerescue
Flight profile flown by Starlink is much more demanding than normal launches
Reentry speeds are much higher placing higher stress than other profiles
SPACE X is probably working on a solution
NASA was talking about Orion having to be tested going through certain portions of the belts. They're far more computerized than Apollo, which means radiation can affect them much more. The Van Allen Belts are not the uniform, impassable barrier you think and claim. Difficult in places, yes. Impossible, no.
originally posted by: Zaphod58
a reply to: cooperton
Think about it for a second. If heat transfer is dependent on atmosphere thickness, what's going to happen to something coming deeper into the atmosphere. The asteroids don't survive because they're going from where heat isn't transferred well, to where heat is transferred very well, resulting in them getting extremely hot, extremely quickly.
A rocket does the exact opposite. It starts building heat as its climbing, from friction in the atmosphere, but it quickly goes to an area where heat isn't transferred almost at all. That's a great medium to dissipate any heat that built up during launch.