Unlike all the climate changes that have affected the planet throughout its history, the hand of Man is behind most, if not all, of the causes of the change we are witnessing at the present time, and there is another completely new element, which is the time period over which the change is occurring. No change in the global climate in the past has occurred in so few years.The "Mars Sample Return Campaign" is a joint NASA/ESA effort to bring Martian rock and soil samples safely to Earth, where they can be investigated in unprecedented detail using the full capabilities of Earth-based laboratories. The sample return mission is designed to continue the work of the Perseverance rover.Everyone knows what the Moon is, they will say that it is very bright with an intense white light, that it has light and dark areas, that it has phases in a cycle of approximately 28 days and that each day it can be located in a different place in the sky, following an eastward motion contrary to the general daily westward motion of the entire celestial vault.
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