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ALL 5 PARTS OF: The Universe – Pulsars & Quasars, www.youtube.com Pulsars are tiny, only a few miles across but spin as fast as a blender and sweep the sky with beacons of radiation that make them appear to flash on and off. They have unbelievably strong magnetic fields, are more accurate than atomic clocks and they can even tell aliens just where to find the Earth! Quasars are at the other end of the spectrum. Quasars are huge cores of galaxies with black holes that are called "monsters …
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