NASA Science Experiments station astronaut sets up capillary channel flow NASA Science Experiments

NASA Science Experiments station astronaut sets up capillary channel flow NASA Science Experiments

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A little interesting about space life.

Dr. Rufu and Dr. Canup studied the scenario in which Neptune once, when it was young, had a typical prograde system of moons orbiting it that was similar to those of the other gas giants in our Solar System. The two authors propose that Triton may have originally been a KBO that wandered away from its home in the Kuiper Belt, only to be snared by Neptune. The interactions that resulted from the capture of Triton between retrograde moons and Neptune's original, prograde moons may have then resulted in the destruction of this orderly system, leaving in its wake only the ruthless Triton and Neptune's moons that are still around today.



and here is another

Triton and Pluto share roughly the same bulk composition and density, as well as similar atmospheres. In addition, both remote bodies move in unusual orbits. Pluto has a highly eccentric orbit, and is sometimes closer to the Sun than Neptune! Furthermore, Pluto orbits in the opposite direction around our Sun than do the eight major planets of our Solar System. Triton revolves around Neptune in a direction counter to that of its planet--and its retrograde orbit indicates that it is a captured object. Because of the unusual nature of both Triton's and Pluto's orbits, as well as the similarities of their bulk properties and atmospheres, it has long been thought that there is some sort of historical connection between them. Indeed, it was once thought that Pluto was an escaped moon of Neptune, but this is now considered unlikely. It is much more likely that long ago Triton, like Pluto, circled the Sun independently, but was unluckily captured by its adoptive planet--whereas Pluto was left to wander freely.



and finally

Weary of the scorching sun during high summer that now comes to an end both people and nature are longing for water and are looking forward to the first rains that herald the monsoon that will begin in June and bring the water so badly needed in this agriculture country. And the first light showers, that are drastically changing the natural environment, are falling around the full-moon day of Kason.

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Earth's Moon completes one orbit around our planet every 27 days, and it rotates (spins) at the same rate. Because Earth is also moving--rotating on its axis as it circles our Star--from our perspective our lunar companion appears to orbit us every 29 days.



"The good news is that our models show that observations of a wet Moon are not incompatible with a Giant Impact origin," Dr. Nakajima explained in the February 26 2018 Carnegie Institution Press Release.



Dr. Jacobson believes that this new study showing a later lunar birthday means that our planet's impact history was more turbulent than earlier thought. The alteration in Earth's bombardment rate, he suggests, also means an alteration in the quantity of energy that went into our planet's oceans and atmosphere. It also has implications for the history of our planet's surface temperature--which is important because liquid water could not exist until the surface had cooled off sufficiently.