@holvek: A pulsar is a highly magnetized, rapidly rotating neutron star formed from the collapsed core of a massive supernova. They possess immense density: while containing more mass than our Sun, their radius spans just 10–20 kilometers. The matter inside is packed so tightly that a single teaspoon of it would weigh billions of tons on Earth. The defining feature of a pulsar is its intense magnetic field, which channels powerful, narrow beams of radiation out of its magnetic poles. Because the star's magnetic axis is misaligned with its rotational axis, these beams sweep through space as the star spins. When these beams cross Earth's line of sight, we detect them as highly regular pulses, earning them the nickname "cosmic lighthouses." These objects rotate at staggering speeds, spinning anywhere from once to hundreds of times per second. The intervals between their pulses are so incredibly stable that they rival the precision of atomic clocks. This extreme predictability allows astronomers to use pulsars as ideal natural landmarks for deep-space navigation and testing fundamental laws of physics. #pulsar #scary #education #neutronstar

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Tuesday 06 October 2026 09:19:43 GMT