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Gulo Blue
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https://www.nature.com/articles/d41586-018-05544-9
Pretty cool mission and display of technology. Launched in 2014. Now it's slowly approaching asteroid Ryuguand is within 25 miles. They sent this thing, not knowing if the asteroid would be spinning too fast to put sample collecting landers on it; turns out, it is spinning slowly enough. It's going to survey the asteroid for a year and a half. It has 4 probes it will deposit on the surface which I've seen described as "rovers", but I'm not clear on how they move. And it has this weird explosive pogo stick that will touch the surface of the asteroid, fire a projectile into the surface, and collect debris that's kicked up to return to Earth.
Pretty cool mission and display of technology. Launched in 2014. Now it's slowly approaching asteroid Ryuguand is within 25 miles. They sent this thing, not knowing if the asteroid would be spinning too fast to put sample collecting landers on it; turns out, it is spinning slowly enough. It's going to survey the asteroid for a year and a half. It has 4 probes it will deposit on the surface which I've seen described as "rovers", but I'm not clear on how they move. And it has this weird explosive pogo stick that will touch the surface of the asteroid, fire a projectile into the surface, and collect debris that's kicked up to return to Earth.