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Planets Project Rubric planet project rubric astronomy lesson planet project Rubric Project Planets

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Planets Project Rubric

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With the GRAIL data, the astronomers were able to map the gravity field both in and around over 1,200 craters on the lunar far side. This region--the lunar highlands--is our Moon's most heavily cratered, and therefore oldest, terrain. Heavily cratered surfaces are older than smoother surfaces that are bereft of craters. This is because smooth surfaces indicate that more recent resurfacing has occurred, erasing the older scars of impact craters.



A moon is a natural body that is in orbit around a planet, and it is kept in place by both the host planet's gravity and the gravity of the moon itself. Some planets possess orbiting moons; some do not. There are several theories explaining how Earth's Moon came to be. At this point, the favored model is termed the giant impact theory, often playfully called the Big Whack or Big Splash theory by astronomers when they are in a humorous frame of mind. These funny nicknames were derived from the central tenet of the theory, which is that a Mars-sized body, named Theia, smacked into the primordial Earth billions of years ago. The collision caused part of our planet's crust to be hurled violently into space. Some of this shattered, somersaulting debris was snared into Earth-orbit, where it formed a host of moonlets that were ultimately pulled together by gravity to evolve into our Moon.



However, when people ask whether mankind has the capability to go to the Moon again, unfortunately the answer is an absolute no. Even though mankind has much more advanced space technology as compared to 1960's; the current technology is not geared toward moon flight. In fact, even the US has lost the capability of the Saturn rockets due to the fact that production facilities have been dismantled. In time, even the know-how has become obsolete, as people who have worked in the Saturn program have retired or died. Hence, even if the US wanted to go to the moon today, a manned flight would be impossible for at least another decade.