New Earth Like Planet 2019 kepler 186f is first earth like planet discovered in a 2019 New Planet Earth Like

New Earth Like Planet 2019 kepler 186f is first earth like planet discovered in a 2019 New Planet Earth Like

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A little interesting about space life.

The moon's internal geological structure is very strange and unique. It has vast areas of hollow underground caves. This is because the moon passed through boiling and molten states before it cooled down to its stable present day temperature. Some caves are miles and miles in length and breath. These caves exist at varying depths below the moon's surface. Almost all the caves are internally connected to each other and it is possible to trace many paths through interconnected caves to fully 'circumnavigate' the moon without ever stepping out on to its outer surface. The tops of the caves that form the crust of the moon's surface are supported on massive vertical rock pillars that rise out of the bottom surface. These vertical support structures are very hard and rocklike and naturally contoured in shell like formations endowing them with heavy load bearing capabilities. To visualize the interior of these caves a comparable earth structure would be the NFL football domes. They would compare in size with some of the smaller caves but none of the caves in the moon are formed in a particular shape, pattern, length, breadth or height, and are quite irregular in shape. Surface terrain is also to a large extent irregular and variable.

and here is another

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 finally

Although Europa was visited by the two spacecraft Pioneer 10 and Pioneer 11 in the early 1970s, and the twin Voyagers in 1979, these early flybys only produced grainy, dim images. However, these early pictures revealed enough about the little moon to make it intriguing. Pale yellow icy plains were seen in the Voyager images. The plains also tantalizingly displayed red and brown mottled areas. Long cracks were observed, running for thousands of miles over the shattered eggshell-like crust. On Earth, similar cracks would suggest such features as high mountains and deep canyons. But nothing higher than a few kilometers was seen on the moon. In fact, Europa is one of the smoothest bodies in our Solar System.

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The crust of Earth's Moon is 43 miles thick on the near-side hemisphere, and 93 miles on the far-side. It is composed of silicon, magnesium, oxygen, calcium, aluminum, and iron. There are also trace amounts of titanium, uranium, thorium, hydrogen, and potassium.

Planetary scientists usually calculate the Moon's age by using the radioactive decay of elements like uranium, explained Dr. John Chambers in the April 2, 2014 National Geographic News. Dr. Chambers is a planetary scientist at the Carnegie Institution for Science in Washington, D.C. By studying an element with a recognized decay rate, and knowing its concentration in Moon rocks or the Earth's surface, scientists are able to calculate back in time to when the material first formed. However, there are numerous and varying radioactive materials that can provide differing timelines, added Dr. Chambers, who was not involved in the study.

The efforts of planetary scientists to determine the lunar birthday have suggested a range of ages. Some have proposed an early event, about 30 million years after our Solar System formed, while others suggested that it occurred over 50 million years and perhaps as much as 100 million years after our Sun's family took shape.