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Horsehead Nebula Information ic434 horsehead nebula ngc2024 flame nebula deep sky Horsehead Information Nebula

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A little interesting about space life.

Though the moon has no atmosphere on the outside, the caves are filled with 'air' well suited to supporting the respiratory needs of life forms. Surprisingly, 90% percent of the moon's internal atmosphere comprises oxygen which exceeds the corresponding oxygen proportion in the earth's atmosphere.



and here is another

The temperatures around the equatorial and mid latitude surface at daytime and in the night are around 225oF and minus 298oF respectively. As the moon day is approximately 28 earth days, heating and cooling of the moon's surfaces affects the inside cave temperature significantly. The temperature difference in the opposite side of the moon makes the air in the cave move from one area to the other creating complex wind movements. When high speed wind flows across the vertical rock structures, it makes gurgling sounds in the caves, resulting in eerie or weird echo effects. The blowing wind helps to mitigate the high humidity conditions.



and finally

Of course, in view of the recent findings, there are other reasons why Moon is so important for mankind. First of all, the findings from the Chandrayaan probe have shown unequivocally that water exists in the lunar poles. Hence, with the existence of water, colonizing the moon has not only become possible, it has become imperative. As you know, water contains both hydrogen as well as oxygen atoms. Hydrogen can be used as a propellant and as an energy source, while water can be used as an oxidizer as well as a major life support requirement. The oxygen is especially important, as it can be filtered to provide air and the water itself can be used from variety of ways from drinking to being used as a coolant in various subsystems. In addition, the proximity of the moon promises the transference of raw materials such as Helium 3 as well as iron that can be found beneath the lunar regolith. Hence, it is the time to go back to the Moon again for the sake of mankind.

Other facts:

The most detailed pictures of Europa show even more intriguing clues that there is slush lurking beneath its brightly shining icy surface. Slightly smaller than Earth's own beloved Moon, Europa's surface temperature could easily freeze an ocean solid over a span of only several million years. However, some astronomers think that warmth from a game of tidal tug-of-war between Europa and Jupiter, as well as other neighboring moons, could be keeping large regions of Europa's subsurface global ocean in a life-friendly liquid state. This process is termed tidal heating, and it refers to a mechanism whereby the gravitational tugs of a nearby object (or objects) flex and bend and contract and expand another object continually. This constant churning causes the victimized object, in this case Europa, to heat up and be considerably more balmy than its great distance from the Sun would otherwise allow it to be.



A fourth, more recent model, is based on the existence of a synestia. A synestia is a doughnut-shaped cloud composed of vaporized molten rock. This recently discovered inhabitant of the Universe is believed to take shape when planet-sized bodies catastrophically blast into one another with both high energy and angular momentum. Soon after the discovery of these puffy celestial "doughnuts" in 2017, planetary scientists came to the realization that they may have a new way to explain Moon-birth. The ancient collisions, that create a synestia, are so violent that the objects that form from these cosmic crash-ups melt and partially vaporize. Ultimately, after having cooled off sufficiently to solidify, they create (almost) spherical planets, such as those inhabiting our own Solar System.



Earth's Moon is the fifth largest moon in our Solar System, and the only world beyond our own that we have walked upon, leaving our footprints behind in moon dust as a silent testimony that once we existed, and had been there. Our Moon is both the brightest and largest object in Earth's night sky, and many astronomers think that our bewitching lunar companion was born as a result of an ancient collision between our planet and an ill-fated Mars-sized protoplanet that has been named Theia. There are other theories that have been devised to explain our Moon's origin, but the Giant Impact theory is considered to be the best explanation. When the doomed Theia blasted into the primordial Earth, it launched into the sky above our planet the debris resulting from that catastrophic crash. The debris eventually coalesced into Earth's Moon.