Neil Armstrong Crater why do some people think neil armstrong never walked on Armstrong Neil Crater
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A little interesting about space life.
Oxygen isotopes on the Earth and Moon measure the same according to the specimens gathered from the Moon, meaning that the Earth and Moon did indeed form at the same distance from the Sun. Finding a theory that could satisfy all three of these specific facts would prove to be rather difficult. There have been three major theories about how the moon was created that have been discounted. Below we will discover what each of these three theories proposed and why they were deemed to be unlikely or impossible. The Fission Theory. The Fission Theory proposes that the Moon was created in the early history of our solar system when something caused the Earth to break apart and a large part of the Earth was cast into space which eventually formed into the Moon. This idea supported the fact that the Earth and Moon share similar mantles, but where this theory falls apart involves the actual physics it would take to create such a scenario. The amount of angular momentum and energy required to create this situation would make the current placement of the Earth and Moon next to impossible. Thus, the fission theory has been deemed incorrect. The Capture Theory. The Capture Theory contends that the Moon came to be obtained by the Earth after it formed in a different location in the solar system, shedding light on the Moon's different composition. There are a couple problems with this scenario. Since we know that the Earth and Moon have the same oxygen isotopes on their surfaces, therefore meaning they would have the same amount of baking from the Sun, it doesn't explain how the Moon would have encountered the extra baking on its surface. The physics behind this call for a lot of specific things to happen, such as the Moon entering Earth's gravitational speed at just the right speed, at just the right distance to allow for the current set-up. Not only would it have to approach the Earth with these two requirements, but there would also have to be something that could slow the Moon down., however, capture into the Moon's present orbit is very improbable. Something would have to slow it down with just the right gravitational pull to cause the Moon to fall into Earth's orbit. While complicated, this could have been possible, but it is very unlikely. The Co-Formation Theory.
and here is another
The mass distribution of the moons of Neptune is lopsided. In fact, it is the most lopsided satellite system of any of the giant planets dwelling in our Solar System. Triton accounts for nearly all the mass of the system, with all of the other moons together accounting for only one-third of 1%. This is very similar to the system of moons that circle the ringed-planet Saturn, where the large, smoggy, orange moon Titan--the second-largest moon in our Sun's family (after Ganymede of Jupiter)--accounts for over 95% of the total mass of Saturn's system of moons.
Using N-body simulations that model a recently snared Triton, and a likely primordial prograde system of moons, Dr. Rufu and Dr. Canup show that if the moons sport a mass ratio comparable to that of Uranus's system of moons or smaller, Triton's destructive dance with them has the tragic likelihood of reproducing the system that astronomers now observe. The simulations even demonstrate that the interactions decrease Triton's original semi-major axis rapidly enough to to stop smaller, outer moons like Nereid from being unceremoniously evicted from the system.
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These days the use of the term, "Once In a Blue Moon", is a very common phrase in our language. In the English language the first known literary reference to a blue moon was in a poem by Roy and Barlow, written in 1528, entitled "Rede Me and Be Not Wrothe". An excerpt, "If they say the moon is belewe, we must believe it to be true." which is a reference to the English nobility. Commonly in this day and age and over the years a blue moon is used as a symbol of melancholy, sadness or loneliness in songs and poetry. We are literally accustomed to the idea of the moon or Lunar, as being a symbol of Romance or Love. Therefore a blue moon reflecting the idea of sadness or feeling 'blue'. The moon seems to be intrinsically connected to our emotions and for many of us, as is the case with your's truly if you have any faith in Astrology, Cancerians are ruled by the moon and their moods can be affected by the various phases of the moon. It was a little ironic to learn after having dragged oneself around shroud in melancholy this week, that there was in fact, a Blue Moon on the horizon. Coincidence?
Mystifying, bewitching, and swathed in a heavy, dense shroud of orange hydrocarbon mist, Titan circles its immense gas-giant parent-planet, Saturn, and is a remarkable world in its own right. Slashed by strange rivers and seas of ethane, methane, and propane, and pelted by large and lazy drops of hydrocarbon rain, Titan is an eerie, tormented, and mysterious moon-world orbiting its magnificent and beautiful ringed parent-planet, in the distant outer realm of the giants--Jupiter, Saturn, Uranus, and Neptune. The four enormous and gaseous wonderland worlds are unlike the quartet of much smaller rocky denizens of the inner Solar System--Mercury, Venus, Earth, and Mars. Because of its dense orange blanket of smog, the geological features of Titan's surface were hidden from the prying eyes of curious astronomers until 2004 when the Cassini/Huygens orbiter and lander finally arrived there--and started to unveil its long-hidden face. In April 2016, a team of planetary scientists announced yet another important revelation about this moon-world--a large sea on Titan is composed primarily of pure liquid methane, with the seabed itself possibly well-coated in a sludge of carbon-and nitrogen-rich material, as well as showing strange shores surrounded by wetlands.
A moon is an enchanting thing! There are more than 100 lovely moons circling the eight major planets in our Solar System, alone--including our own beloved Moon--the brightest and largest gleaming object suspended in the brilliantly starry night sky above the Earth. But how did the moons of our Solar System come into being?