This high cliff occurs no longer on a planet, no longer on a moon, but on a comet. It was as soon as stumbled on to be a part of the darkish nucleus of Comet Churyumov-Gerasimenko (CG) by Rosetta, a robotic spacecraft launched by ESA that rendezvoused with the Solar-orbiting comet in 2014. The worn cliff, as featured here, was as soon as imaged by Rosetta in 2014. Although towering about one kilometer high, the low ground gravity of Comet CG would seemingly accomplish it an accessible climb — and even a soar from the cliff survivable. On the foot of the cliff is rather easy terrain dotted with boulders as nicely-organized as 20 meters across. Data from Rosetta means that the ice in Comet CG has a very a lot assorted deuterium piece — and therefore seemingly a assorted foundation — than the water in Earth’s oceans. Rosetta ended its mission with a managed impact onto Comet CG in 2016. Comet CG has actual done yet another cease methodology to Earth and remains seen by a tiny telescope.