A disputed topic of all times . Can anyone explain how the flag was moving without any atmosphere on the moon ?
No atmosphere=no friction. An object in motion stays in motion until an outside force counters it. The main two being friction (none present), and gravity (less gravity on the moon). If you were to pick up a rock and throw it in space with no gravity present, it would continue moving at that same speed almost indefinitely. So yeah, it's absolutely plausible that the flag would continue moving for quite some time with only a little bit of gravity to act on it.
Thank you that I didn't have to write it down myself.
@RadiationThe whole video was about the design and testing of the
orion spacecraft. It has to be tested and the radiation has to be measured in order to
know with certainty that it will not harm the crew. The video doesn't say anywhere that there is no way to shield the spacecraft or that the Apollo mission spacecrafts were not shielded.
According to
this source, Apollo 11's crew had an average radiation dose of 0.18
rads.
Another source says that
"Over the course of the lunar missions, astronauts were exposed to doses lower than the yearly 5 rem average experienced by workers with the Atomic Energy Commission who regularly deal with radioactive materials." (simply to put the 0.18 rads in perspective)
Also, the video doesn't say that we cannot get past the Van Allen belt
It simply says that "we must solve these challenges ...", which refers to this particular spacecraft and means that we have to prove that (this particular spacecraft) is capable of safely passing through.
@Use the same radiation shield as in Apollo missionsThis is not a toaster that you can take off the shelf and use it. It is designed, manufactured -and probably improved- specifically for that one spacecraft.
