Linked Questions

23
votes
4answers
1k views

Karman line analog on other celestial bodies

Is there a common definition of where the space begins on other planets (and other celestial bodies)? An equivalent of the Karman line. How far one should go from the martian surface to get to the ...
3
votes
3answers
1k views

When do aircraft become solarcraft?

Any body travelling through particles undergoes drag. Any body able to generate lift (for instance spheres cannot generate lift) can generate lift if it undergoes drag. First by assuming one body in ...
11
votes
1answer
428 views

Did the crew of Soyuz MS-10 pass the Karman Line?

Just wondering if Nick Hague got his gold astronaut wings.
10
votes
1answer
424 views

What did Karman's original “Karman line” calculations look like?

Looking for the atmospheric parameters (density for example) and vehicle parameters (CL for example) as well as formulae that were used in the original calculation. Primary sources strongly preferred,...
14
votes
2answers
896 views

Have spacecraft ever dipped below the Karman line and then safely continued spaceflight?

The item in Science Alert's A Harvard Astrophysicist Says Outer Space Is Actually Closer Than We Think (see also Science; Outer space may have just gotten a bit closer) talks about the recent Acta ...
6
votes
1answer
169 views

With a 10% increase in Earth's mass, would the Karman line move up or down, and by how much?

This is an exercise to better understand the basic physics and math behind scale height and the Karman line. It was inspired by this answer to Why is FAI considering lowering the Karman Line to 80km? (...
1
vote
1answer
85 views

Temperature and Pressure Gradient across Kármán line

Has there been any experimental measurement of the temperature and pressure gradient across the Kármán line? How much time did it take for a space shuttle (such as Atlantis) to cross it, and whether ...
3
votes
1answer
149 views

When is/will be the symposium to revisit the Karman line and consider the “McDowell line”?

In the January 16, 2019 Sixty Symbols video Where is the edge of space? Dr Meghan Gray from the University of Nottingham discusses Jonathan McDowell's paper The edge of space: Revisiting the Karman ...
1
vote
1answer
153 views

Does the recently-tested Russian hypersonic craft enter space?

I am not going to invoke the K-word in this question! Hypersonic long-range craft have to fly pretty high to travel circa mach 20. Would they need to travel into space to do so efficiently?
-3
votes
1answer
110 views

Is it correct to apply the vis-viva equation to an airplane that flies in a straight line at the Kármán line?

The vis-viva equation models the motion of an orbiting body and it applies when the only force acting on the body is it's own weight. So is it correct to apply this equation to an airplane that ...
2
votes
1answer
90 views

Was there a spacecraft that was clearly the first to be put in a polar orbit?

Was there a first spacecraft put in a polar orbit? It might not be clear if it's too hard to say what high inclination orbit is or is not polar, for example if 91 satellites were launched in 0, 1, 2.....
1
vote
1answer
98 views

What are the minimum and maximum calculated, published altitudes of the Kármán line?

I'd like to be able to say, "The Kármán line has been calculated to lie between ___ and ___ km." The "accepted" altitude of the ...