A pulsar is a highly magnetized, rapidly rotating neutron star that forms from the collapsed remnant of a massive star after a supernova explosion. Although they are incredibly dense—packing more mass than our Sun into a sphere only about 12 miles across—their most famous characteristic is how they emit radiation. As a pulsar spins, it shoots out intense beams of electromagnetic radiation from its magnetic poles, acting much like a cosmic lighthouse. Because the star's rotation and magnetic axes are not perfectly aligned, these beams sweep across space, and whenever they point toward Earth, astronomers detect a brief, highly regular pulse of energy. Some of these stars, known as millisecond pulsars, can rotate hundreds of times per second with such extreme precision that scientists use them as natural cosmic clocks to study deep space and test the laws of physics.
2026-07-17 21:18:24
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Ttz2和 :
*risos gulosos*
2026-07-11 23:16:21
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