Japanese claim they put some rovers on astroid Ryugo. For 86B USD.

I doubt it.

Imagine you put one tiny small grain of sand on a pingpong ball. You then turn the pingpong ball. Will the grain of sand still be there?

Nope.

Why is that? Because centrifugal force was stronger than gravitational attraction of the two masses. It is also possible to calculate that stuff. Is the centrifugal force larger than the gravitational, the small grain will fly away. If not, the cow stays on the planet.

Ryugu has almost no gravity at all. And its gravity is definitely less than the centrifugal force of an it rotating once every 7.6 hours.

Calculation below. Speculations, calculations, corrections and conspiracies are welcome. Guess they might just have used some sort of grappling hooks, too.

https://www.space.com/41912-japanese-ho … eroid.html

Ryugu.pdf

QT

i have it on good authority they used the best Japanese duct tape they could find

Scotch tape with the name Ryugu written on it? On the bottom of a lid? Could be a hint..

QT

I read that the rovers can’t roll around on the surface because of the weak gravity — they would immediately start floating once they move.

So they have a "hopping" mechanism. Once they hop, they stay floating for about 15 minutes before landing again.

If the mission was faked, then the international array of radio receivers, not all operated by JAXA, must be in on it too. Surely they would be able to quickly confirm whether or not real telemetry signals were coming from that part of space.

No hopping on Ryugu, for sure. That would work if you had some sort of earth gravity.

But you don’t.

Only (was it?) 0,0002 Newton…thats if you take a 1Kg mass, eg. an iron bar, put it on some Newton-scaled spring and it showed not 9.8 inch but 0,0002 inch instead…thus if you give that Ryugu a kick in space, it’d flow away. With rotation force, exactly nothing sticks on that funny asteroide.

BUT maybe they put the rover on the asteroide while circling around it..that’d take away the centriPETAL force at least…but even then it wouldn’t work (centrifugal force still be stronger).

In the news? No comment on that, nor on any hooks or something similar. As long as they don’t show up with some stuff like that, I’d rather believe in the Apollo mission, Obama being an American native and Trump never having had sxx with any hookas ;D.

But, on the other hand, it’d be fun to write the Jap Space Center like having calculated that what they do actually defies physics so they please would explain? . Or QT having an error in his 3rd person calculation.

QT
(Sputnik)