Nearly fifty years ago, astronomers discovered a bizarre signal in the sky coming from an unknown, mysterious object. Where most astrophysical objects send a steady stream of particles, light and radio waves, this new object was rapidly pulsing x-rays.
These objects were eventually found to be very compact objects, known as neutron stars. When a star reaches the end of its life, and has exhausted its supply of nuclear fuel, it will expel its outer layers and the core will collapse into a smal...
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