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Interesting facts about space.

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.



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The movement of the moons in the Pluto-Charon system provides precious insights into the way planets orbiting in a binary stellar system--or double star system--might behave. "We are learning that chaos may be a common trait of binary systems. It might even have consequences for life on planets orbiting binary stars," Dr. Hamilton explained in the June 3, 2015 HST Press Release.



and finally

In their research, the planetary scientists combined several radar observations of heat given off by Ligeia Mare. They also studied data collected from a 2013 experiment that bounced radio signals off Ligeia Mare. The results of that experiment were presented in a 2014 paper led by Cassini radar team associate Dr. Marco Mastroguiseppe of Cornell University in Ithaca, New York, who also was part of the new study.

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If this ancient catastrophic impact really did occur, there should be deposits of these tragic moons on the Martian surface. The Japanese Aerospace Exploration Agency (JAXA) is currently planning a sample return mission to Phobos and Deimos, the Martian Moons Explorer, and NASA has plans to eventually return samples to Earth from the surface of Mars-- perhaps as soon as the 2020s. At the conclusion of their paper, the authors note, "Our scenario provides further motivation for a sample return mission to the Martian satellites."



Now, by pinpointing the precise birthday of the Moon, Dr. Jacobson and his team can help to explain why the Moon and our planet are so mysteriously similar in their compositions.



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.