@holvek: A pulsar is a highly magnetized, rapidly rotating neutron star born from the core collapse of a massive star during a supernova explosion. Despite having a mass comparable to our Sun, this extreme object is compressed into a sphere just 10 to 25 kilometers in diameter, resulting in an incredibly dense state of matter. Intense beams of electromagnetic radiation escape from the star's magnetic poles. Because the magnetic axis is tilted relative to its rotational axis, these beams sweep across the cosmos like a cosmic lighthouse. When a beam points toward Earth, telescopes detect it as highly predictable, rhythmic pulses. The rotation of some pulsars is so incredibly stable that they rival the precision of atomic clocks, with millisecond pulsars capable of spinning hundreds of times per second. Depending on their emission and energy source, scientists classify them into radio pulsars, X-ray pulsars, and magnetars (neutron stars with ultra-strong magnetic fields). Today, studying pulsars allows astrophysicists to test the laws of general relativity and explore physics under the most extreme conditions in the universe. #pulsar #scary #physics #experiment

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Saturday 12 September 2026 13:20:10 GMT