Since the beginning of the century, four unmanned missions have been sent to asteroids. They aim to analyze the composition and behavior of these celestial bodies that have remained relatively unchanged since the creation of our solar ...See moreSince the beginning of the century, four unmanned missions have been sent to asteroids. They aim to analyze the composition and behavior of these celestial bodies that have remained relatively unchanged since the creation of our solar system. These time capsules contain precious information about the original ingredients that formed our planet. Asteroids could help scientists answer the fundamental question: How did life appear on Earth? The first missions revealed that most asteroids were accumulations of rocks rather than solid blocks, the result of a huge game of celestial snooker. Soon, scientists realized the necessity of bringing back samples from asteroids. These samples would need to be contained in hermetically sealed vessels that could survive re-entry into Earth's atmosphere. This technological challenge tests the nerves of space probe operators who must orchestrate and program the movements of space craft from a distance of several hundred million miles away.
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