Space MIAD Practice Test

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Prepare for the Space MIAD Test with flashcards and multiple choice questions. Each question features hints and explanations to enhance your learning experience. Get ready for your exam!

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Explorer 1, launched in 1958, proved the existence of what phenomenon?

The ionosphere
The Van Allen Belts
Astronomical radiation
Microgravity effects

The correct answer is: The Van Allen Belts

Explorer 1, which was launched on January 31, 1958, played a significant role in the advancement of space science by confirming the existence of the Van Allen Belts. These are zones of charged particles, mainly electrons and protons, that are trapped by Earth's magnetic field. The mission was critical because it provided the first evidence of how radiation interacted with the Earth’s magnetosphere, highlighting the importance of these belts in understanding radiation hazards in space. The scientific instruments aboard Explorer 1, particularly a cosmic ray detector, gathered valuable data that demonstrated that there was an area around Earth where high-energy particles were concentrated. This groundbreaking discovery opened up new areas of research in space science, leading to a deeper understanding of space weather and its effects on satellite technology and human spaceflight.