"Gravity on the surface of Ryugu is very weak, so a rover propelled by normal wheels or crawlers would float upwards as soon as it started to move," officials with the Japan Aerospace Exploration Agency (JAXA) wrote in a description of MINERVA-II1A and MINERVA-II1B. So, the robots — each of which measures 7 inches wide by 2.8 inches tall (18 by 7 centimeters) and weighs 2.4 lbs. (1.1 kilograms) — hop instead. They do…
Hayabusa 2 rovers send new images from Ryugu surface
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Re: Hayabusa 2 rovers send new images from Ryugu surface
#32"Gravity on the surface of Ryugu is very weak, so a rover propelled by normal wheels or crawlers would float upwards as soon as it started to move," officials with the Japan Aerospace Exploration Agency (JAXA) wrote in a description of MINERVA-II1A and MINERVA-II1B. So, the robots — each of which measures 7 inches wide by 2.8 inches tall (18 by 7 centimeters) and weighs 2.4 lbs. (1.1 kilograms) — hop instead. They do…
You don't happen to know of an animation showing the system in action, do you?
I recommend watching the whole video.
Re: Hayabusa 2 rovers send new images from Ryugu surface
#33Sadly, no diamonds on the surface. Or gold. Would love to see how "the market" will react to that ;)
Re: Hayabusa 2 rovers send new images from Ryugu surface
#34Is it at all possible to match the spin of a smallish android from orbit ?
Re: Hayabusa 2 rovers send new images from Ryugu surface
#35Earlier quoted context omitted.
Wonder if they could use some sort of rather slow mechanical deformation to provide movement with pump mechanisms. I guess that still would rely on significant gravity or other anchoring ti avoid slippage.
Movement along the surface via friction (wheels, crawling, snaking etc) is not considered feasible. The surface is probably too loose to provide much traction, but more importantly the low gravity means the vehicle will certainly become caked in dust very quickly. Hopping means you don't disturb the surface, and if you do you probably fly clear of the resulting dust cloud.
Re: Hayabusa 2 rovers send new images from Ryugu surface
#36Earlier quoted context omitted.
> since it doesn’t have any significant value in the field of astronomy. PR has some value: more people will want to try and join the field and more funding could be secured.
NASA is not allowed PR as a federal agency. Imagine how far ads, sponsoring games/events, etc, would get NASA in terms of PR. Compare that to the military: https://www.cheatsheet.com/money-career/amount-money-militar... https://taskandpurpose.com/us-military-combat-trainer-kick-a... Not only that, NASA's education department was as close to PR as we had and... https://www.forbes.com/sites/startswithabang/2017/05/25/t…
Re: Hayabusa 2 rovers send new images from Ryugu surface
#37I love that they opted for color cameras. Not much color to be seen, but the flares, together with the motion blur (while falling and hopping!) make the pictures look really dynamic. :)
Re: Hayabusa 2 rovers send new images from Ryugu surface
#38Sadly, no diamonds on the surface. Or gold. Would love to see how "the market" will react to that ;)
Diamonds are unlikely to be found on asteroids, because they require immense pressures to form, and the gravity on asteroids is so weak that even at the core the pressure is less than sea level air pressure on Earth.
Re: Hayabusa 2 rovers send new images from Ryugu surface
#39Earlier quoted context omitted.
NASA is not allowed PR as a federal agency. Imagine how far ads, sponsoring games/events, etc, would get NASA in terms of PR. Compare that to the military: https://www.cheatsheet.com/money-career/amount-money-militar... https://taskandpurpose.com/us-military-combat-trainer-kick-a... Not only that, NASA's education department was as close to PR as we had and... https://www.forbes.com/sites/startswithabang/2017/05/25/t…
On the other hand, I visited several of the major ESA facilities across Europe, and then Kennedy Space Center, and it was a stark difference how much more commercialized KSC is. It’s a proper theme park. I don’t think any other space agency has anything so touristy.
https://en.wikipedia.org/wiki/Kennedy_Space_Center_Visitor_C...
Re: Hayabusa 2 rovers send new images from Ryugu surface
#40Earlier quoted context omitted.
Consider literal competitions--it was similarly appalling to watch recent Olympics in the US. 95% or more of the coverage was of Americans winning. If a particular day had fewer wins, they would replay earlier footage rather than dare show any other country succeeding at non-American dominant areas. One saving grace is that the NBC app had all the footage they didn't deem worthy of broadcasting.
I can't watch the Olympics on US TV. Hours of stories about the upbringing of the US athletes interviewing moms and grandparents. Then a little actual sport if you are lucky. And certainly nothing where there isn't a US athlete/team at the front. It's unbearable.