LOL. My simple Challenge is just to calculate the fuel required (kg) for some manned space trips and to show that you can lift it off the ground ...
Then you owe NASA the Russian and Chinese space agencies a million euros, because they have obviously calculated the fuel required and demonstrated that the rockets can lift it off the ground as a part of multiple manned space trips.
... and you provide links to some stupid reports.
No, I provided links to text books that teach you how to calculate interplanetary trajectories and how to plan atmospheric reentry.
And you don't even have a name.
I have a name. I simply choose not to share it here. If you like, you can call me Mark.
The Challenge is also to describe the sanitary facilities provided. The humans aboard must be able to be clean and happy.
There are different standards of "clean and happy". Just like early ships, early manned rockets aren't known for their luxury.
And what is shown? A little capsule with some seats inside. Hilarious. Not even toilet paper!
Do you have toilet paper on display in your business office?
The impossible Challenge is of course the re-entry and landing. It is suggested that there is air at 120 000 m altitude and that it will provide friction and turbulence for landing. But there is no air at 120 000 m altitude with birds flying around in it. The air is 115 000 m further down.
Of course there is air at 120 km, just not very much. You do understand that air density gradually decreases as you go up, don't you? That means that air density gradually increases as you go down.
To be sure, atmospheric reentry is a challenge, but it is a solvable one to those who understand the finer points of high speed aerodynamics.
Please, grow up and do not support the criminal idiots at NASA and their Rotary friends with their prizes.
Please lighten up and stop acting like a bitter old man. There is simply no possible way that manned space flight could possibly be faked so many times by so many different agencies.