NASA Earthrise Wallpaper earthrise 2340×2327 space Wallpaper Earthrise NASA

NASA Earthrise Wallpaper earthrise 2340x2327 space Wallpaper Earthrise NASA

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A little interesting about space life.

However, Neptune is wacky. This giant gaseous world has only a small number of moons when compared to the other three gaseous giant planets in our Sun's outer realm: Jupiter, Saturn, and Uranus. Of the quartet of giant planets that inhabit our Sun's outer kingdom, Jupiter and Saturn are classified as gas-giants, while Uranus and Neptune are ice-giants. While all four planets are enormous in size, Jupiter and Saturn are much larger than Uranus and Neptune, and possess much more massive gaseous envelopes. The ice-giants, Uranus and Neptune, are smaller, contain larger solid cores, and sport less massive gaseous envelopes than their two gas-giant planet kin.



and here is another

There are several potential explanations that could account for the sea's composition of pure methane, Dr. Le Gall added. "Either Ligeia Mare is replenished by fresh methane rainfall, or something is removing ethane from it. It is possible that the ethane ends up in the undersea crust, or that it somehow flows into the adjacent sea, Kraken Mare, but that will require further investigation," she noted.



and finally

The inner Solar System is dramatically different from the distant realm of the giant planets. The inner region of our Solar System, where our Earth is situated, is almost entirely moon-less. Of the four relatively small, rocky worlds--Mercury, Venus, our Earth, and Mars--Mercury and Venus are barren of moons, and Mars is orbited by two fascinating, but very small, potato-shaped moons named Phobos and Deimos. The duo of Martian moons are often considered to be captured asteroids that long ago escaped from their birthplace in the Main Asteroid Belt between Mars and Jupiter. According to this scenario, Phobos and Deimos, during their dangerous journey from their original home, were snared by the gravity of their adopted Red Planet when our 4.56 billion-year-old Solar System was young. In the warm and well-lit inner Solar System, only Earth's large Moon is a significant moon-world in its own right.

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Saturn is the smaller of the two gas-giant planets dwelling in the outer regions of our Solar System, far from the friendly light and warmth of our incandescent golden Star, the Sun. The larger of the two gas-giants is Jupiter, which is also the largest planet in our Solar System. Some scientists think that the two gas giants do not have solid surfaces hidden beneath their immense and heavy gaseous envelopes, although others think that they probably do contain relatively small cores of rocky-icy material. The two other large denizens of the outer limits of our Sun's family are Uranus and Neptune, which are classified as ice-giants, because they have large icy cores buried beneath their heavy atmospheres which, though massive, are not nearly as heavy as the gaseous atmospheres borne by the two gas-giants.



Saturn is probably the most beautiful planet in our Sun's lovely family, with its magnificent system of enchanting rings, gleaming icy moons, and myriads of tumbling moonlets that dance and somersault both within and outside of the rings. One of Saturn's moons is Titan, the second largest moon in our Solar System, after Ganymede of Jupiter. Shrouded in a dense orange mist, Titan is famous for its frozen clouds of methane, and hydrocarbon seas and lakes. Titan's thick, veiling atmosphere is composed of a wonderful icy soup of compounds very much like those thought to have been present in Earth's primordial atmosphere. Titan's thick atmosphere--which is much denser than Earth's atmosphere--contains mostly nitrogen, like that of our own planet. But Titan's atmosphere also contains significantly greater percentages of such so-called "smoggy" chemicals as methane and ethane. The smog on Titan is so extremely dense that it actually rains "gasoline-like" liquids down on the surface of this bizarre world. Indeed, some of the chemicals discovered in Titan's atmosphere might indicate that simple and primitive methane-based life (methanogens), might dwell on this truly weird moon.



On The Space Station. NASA is still silent as far as experiments are concerned regarding sex in space. Though the possibility was the greatest when a husband and wife team was in space together, that was not on the official work program. Then again, it is not work per say. Did they do it and was it different? NASA is not saying. One could say that it would be slightly different. You would need to cling to each other and where it is optional on Earth, in space it would be essential. After the act a man could simply float away, instead of rolling over.