International Space Station Logo may 2012 do it yourself podcast blog Space Station Logo International

International Space Station Logo may 2012 do it yourself podcast blog Space Station Logo International

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A little interesting about space life.

In this fascinating new research, the astronomers announced that they have discovered that a duo of Pluto's moons, dubbed Nix and Hydra, are actually in a chaotic rotation. This basically means that an observer standing on the alien surface of icy, strange Pluto, would not observe the same face of its moons from one night to the next. For those observers visiting the two bizarre moons themselves, things would be even weirder because every day would be a different length from the one that came before it.



and here is another

Triton is the largest of Neptune's 13 moons. It is an unusual world, twirling around its planet in the wrong direction. Many astronomers think that some time in the remote past, Triton was nudged out of its home in the Kuiper Belt, and during its wanderings in the darkness of interplanetary space, at last swept close enough to Neptune to feel the irresistible lure of that planet's gravity. As Neptune drew Triton into its gravitational embrace, that luckless wanderer from the Kuiper Belt underwent a sea-change from a comet-like denizen of our Solar System's outer limits, to a moon of one of the major planets. So, there Triton whirls around in its new home, circling its planet Neptune, but circling it backwards. And like all moons, it is now a dependent of its parent planet. As a matter of fact, the moon was given the name of Triton as an allusion to the demigod Triton's dependence on the sea-god Neptune in Greek mythology.



and finally

In dramatic contrast, the inner region of our Solar System, where our Earth dwells--along with Mercury, Venus, and Mars--is relatively barren of moons. Mercury and Venus have no moons, and Mars is orbited by a small duo of deformed moons, Phobos and Deimos, that are probably asteroids that escaped from the Main Asteroid Belt between Mars and Jupiter billions of years ago--only to be captured by the Red Planet's powerful gravitational embrace. Our Earth is the only inner planet that possesses an impressively large, spherical Moon.

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Because the lunar atmosphere is very thin, it is far too sparse to prevent a steady shower of impacts from tumbling asteroids, comets, and meteoroids. These objects strike the lunar surface, leaving behind numerous crater scars. For example, Tycho Crater is over 52 miles wide.



The discovery that the hidden interior of Earth's Moon contains water raises some interesting questions concerning lunar formation. Most planetary scientists think that our Moon was born from the debris left behind after the catastrophic collision of our primordial planet with the tragedy that was Theia. This collision would have occurred very early in our Solar System's history. However, one of the reasons scientists had proposed that the lunar interior should be dry is that it is unlikely that the hydrogen necessary to create water could have survived following the ferocious heat of that ancient impact.



Alas, this is not the case with Phobos and Deimos. Phobos, the larger of the duo of little Martian moons, at 22 kilometers in diameter, is lazily tumbling towards Mars and will approach the Roche limit in about 20 million years. At this tragic point, it will shatter into fragments that will ultimately form a spectacular ring around its planet. Only Deimos will remain--bereft of its companion. Deimos is the smaller moon of the pair, and circles its parent-planet further out. This last remaining little moon will be a lonely object lingering in the Martian sky at this sad point--but it was not always thus. The new 2016 study suggests that Mars once possessed a very complex system of many moons.