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Curious facts about cosmic life and their inhabitants.

Banded, beautiful, and a bewitching sapphire blue, the ice-giant planet Neptune is the most distant major planet from our Star--and it is also circled by a bizarre large moon that may not have been born a moon at all. Neptune's moon, Triton, may really be an uninvited guest--the alien changeling child, taken in from the cold, by its current parent-planet, Neptune. Triton shows features that hauntingly resemble those seen on the dwarf planet Pluto, an icy denizen of the remote Kuiper Belt. The Kuiper Belt is a reservoir of a multitude of sparkling icy comet nuclei, as well as other frozen bodies--some large, some small--situated in a ring around our Sun beyond Neptune's orbit. Triton and Pluto share roughly the same density and bulk composition, as well as similar atmospheres--and they both travel in unusual orbits. Also, Neptune's system of moons is not what astronomers expect for a gaseous ice-giant planet, inhabiting the outer Solar System. In November 2017, a team of astronomers announced that they have explored the possibility that Neptune was really born with an ordinary system of moons that was later destroyed when it captured its murderous giant moon, Triton.



and here is another

However, this did not prove to be the case. Instead, Cassini's measurements did not suggest any great difference in temperature between the surrounding shore and the methane sea over this span of time. This finding indicates that the terrains surrounding the lakes and seas on Titan are wet with liquid hydrocarbons, which would cause them to warm up and cool down in much the same way as the methane sea itself.



and finally

Alas, this is not the case with Phobos and Deimos. Phobos, the larger of the duo of little Martian moons, at 22 kilometers in diameter, is lazily tumbling towards Mars and will approach the Roche limit in about 20 million years. At this tragic point, it will shatter into fragments that will ultimately form a spectacular ring around its planet. Only Deimos will remain--bereft of its companion. Deimos is the smaller moon of the pair, and circles its parent-planet further out. This last remaining little moon will be a lonely object lingering in the Martian sky at this sad point--but it was not always thus. The new 2016 study suggests that Mars once possessed a very complex system of many moons.

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The first observations of Mars as an object traveling in Earth's night sky was recorded by the ancient Egyptian astronomers, and by 1534 BCE the ancient astronomers were familiar with the retrograde movement of the planet. By the time of the Neo-Babylonian Empire, the Babylonian astronomers were making regular records of the positions of the planets, as well as systematic detections of their behavior. In the case of Mars, the ancient astronomers realized that it made 42 circuits of the zodiac every 79 years. These scientists of long ago even invented arithmetic methods so that they could make minor corrections pertaining to the predicted positions of the planets inhabiting our Solar System. The ancient astronomers referred to the planets as "wandering stars".



"More generally, our findings clarify how giant impacts give birth to satellites and can create a diverse variety of satellite systems," Dr. Charnoz told the press on July 4, 2016. He added that the team could apply their method to other regions of our Universe:



Prepare for the New Moon Just Like the Full Moon. If we stay with it though and begin to prepare for the New Moon just like we used to do only for the Full Moon, we have the opportunity now for heightened awareness, increased unfolding of our intuition two times during the month instead of just one.