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A little interesting about space life.

Kepler-22b's initial transit in front of the face of its fiery star was seen by Kepler on its third day of scientific observations, back in May 2009. The third passage was spotted in late 2010. Still more confirming evidence was provided by the infrared Spitzer Space Telescope, as well as by ground-based 'scopes. The confirmation of the existence of this interesting extrasolar planet world was announced on December 5, 2011.



and here is another

For this reason, for many years astronomers considered the possibility that hydrocarbon lakes and seas might exist on this fantastic moon-world. Data that finally arrived courtesy of the joint NASA and European Space Agency's (ESA's) Cassini-Huygens mission lived up to their expectations. Since arriving at the Saturn system in 2004, the Cassini spacecraft has revealed more than 620,000 square miles of Titan's long-hidden, bewildering surface--and it has shown that almost two percent of Titan's entire surface is covered in liquid.



and finally

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.

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According to the new theory, moon-formation starts at the very edge of a planetary ring, where a fragile baby moon can begin to emerge without the danger of being ripped apart by the fierce gravity of its parent planet. These dancing little moonlets, formed from ring-material, then travel outward. As the ring-system continually produces moonlet after moonlet after moonlet, the small icy worlds coalesce to form increasingly larger moons. The larger moons, in turn, may also merge together, as they dance outward from their parent planet.



Crida and Charnoz tested their new model to find out whether it could be applied to other planets in addition to Saturn. Their investigation has brought to light several valuable facts. This scenario for moon-birth from planet-rings succeeds in offering an explanation as to why the largest moons dwell farther away from their parent planet than the smaller moons. It further explains the gathering of moons close to the Roche limit--their birthplace--on the outermost fringes of the rings. This distribution is in agreement with what is seen in the Saturn-system. The same scenario can also apply to the moons of other giant planets, such as the ice-giants Uranus and Neptune. The Uranus-system and the Neptune-system are also organized in a similar way. This discovery suggests that long ago, when these planets were young, they also sported impressive rings like those of Saturn--which ultimately vanished when their moons were born. Finally, this scenario can also explain the formation of Earth's Moon, and the moons of the dwarf planet Pluto. According to Crida and Charnoz's calculations, under special circumstances a single moon--like Earth's own--can be born from a primordial ring around its planet. This may well have occurred in both the case of Earth's single large Moon, and for Pluto's largest moon, Charon.



Another interesting piece of Apollo 11 trivia is the fact that the Apollo missions had actually been ongoing and this was actually the fifth mission of Project Apollo that involved human spaceflight. Aside from that, it was also the third voyage by humans to the moon; however, no human had ever stepped foot on the moon until this specific voyage.

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