Xkcd Rover Spirit xkcd 695 apparently cern scientists couldn39t handle the Xkcd Rover Spirit

Xkcd Rover Spirit xkcd 695 apparently cern scientists couldn39t handle the Xkcd Rover Spirit

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It is important to know at any age!

But there is an important difference. On our own planet, lakes and seas are flowing with water, while Titan's lakes and seas are filled primarily with methane and ethane, that slosh around within these liquid reservoirs. In this never-before-seen cycle, the hydrocarbon molecules evaporate and condense into clouds that send an exotic "rain of terror" back down to this strange moon-world's carbon-slashed surface.



and here is another

A billion years ago, our Moon was closer to Earth than it is now. As a result, it appeared to be a much larger object in the sky. During that ancient era, if human beings had been around to witness such a sight, it would have been possible to see the entire Moon--not merely the one near side face that we see now. A billion years ago, it took our Moon only twenty days to orbit our planet, and Earth's own day was considerably shorter--only eighteen hours long. Stupendous, almost unimaginably enormous tides, that were more than a kilometer in height, would ebb and flow every few hours. However, things changed, as the lunar orbit around our primordial planet grew ever wider and wider. Annually, Earth's Moon moves about 1.6 inches farther out into space. Currently, the lunar rate of rotation, as well as the time it takes to circle our planet, are the same.



and finally

The team discovered that the Methone's density would be about 300 kilograms per cubic centimeter. That amounts to less than a third of the density of water, making Methone less dense than any other known moon or asteroid in our Solar System!

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The scientists also ruled out the possibility that the mysterious features actually exist on Titan's surface in the form of frozen methane rain or icy lava erupted from cryovolcanoes. Such surface features would show a different chemical signature and would be visible for much longer periods of time than the bright features observed in this study. The bright features were visible from time spans of only 11 hours to five weeks.



You might ask the situation of the other nations which also possess space technology. Especially, Russia has made some advancements of her own, but the Russian space program is only a fraction of what it once was. Of course, there is also some work by the Chinese as well as by the Indians and even the Europeans are trying to develop new space programs.



During Cassini's close flyby of Enceladus on October 28, 2015, it detected molecular hydrogen as the spacecraft zipped through the plume of ice grains and gas spraying out from cracks slashing though the icy crust of the moon-world. Earlier flybys provided hints that a global subsurface ocean did, indeed, exist, sloshing around above a rocky core. Molecular hydrogen in the plumes could indicate hydrothermal processes, which could play the important role of providing the chemical energy so necessary to support life as we know it. In order to hunt for hydrogen specifically originating on Enceladus, the spacecraft dived particularly close to the strange slashed surface.