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A little interesting about space life.
Triton is one of the coldest bodies in our Solar System. In fact, it is so cold that most of its nitrogen atmosphere is condensed as frost, giving its surface a very bright, mirror-like surface, that reflects about 70% of the sunlight that reaches it.
and here is another
Titan possesses a smooth, young surface, scarred by comparatively few impact craters. The climate of this frigid moon--including its fierce winds and showers of hydrocarbon rain--carves out surface features that bear an eerie resemblance to those on Earth, such as lakes, sand dunes, rivers, seas, and deltas. Indeed, planetary scientists propose that Titan bears a haunting resemblance to Earth, and is believed to be similar to the way our planet was before life had a chance to evolve out of non-living substances (prebiotic).
By studying how the four inner planets evolved and grew--using more than 250 computer simulations--the planetary scientists discovered that if the Moon-birthing blast had happened early, the quantity of material accreted onto Earth afterward would be enormous. If the impact had occurred late, the amount of material would be relatively small.
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Earlier research had determined the quantity of material accreted onto the ancient Earth following the Moon-forming collision. These previous calculations were based on how the siderophile or "iron-loving" elements such as platinum and iridium show a strong tendency to wander down into our planet's core. Following each giant impact that the primordial Earth experienced, these elements would have leached from Earth's mantle and bonded with iron-rich, heavy material that was destined to travel down, down, down into our planet's heart.
There is an important distinction between the way giant planet systems form--such as those belonging to Jupiter, Saturn, Uranus, and Neptune--and the way that the rocky planets such as Earth, and the dwarf planet, Pluto, take shape. The gaseous giant planets are surrounded by rings, a myriad of moons, and a vast number of tiny dancing moonlets, whereas the rocky planets have none, or only one moon, and no rings to be seen. Until this new model was developed, two scenarios were generally used to explain how the regular moons of our Solar System were born. These two commonly used explanations suggest that the moons of Earth and Pluto came into being following catastrophic impacts. They further suggest that the moons of the giant, outer planets were born in a nebula floating around the newborn gigantic planet. They fail, however, to explain the distribution and chemical composition of the moons circling the gigantic outer four. Something, therefore, up until now, has been missing.
The moon-mergers may have happened very long ago--or maybe quite recently. The mergers could have been tripped off by gravitational disruption caused by a migrating giant planet such as Uranus or Neptune, the researchers told the press in October 2012.