#TBT to August 6, 1967, when Jocelyn Bell Burnell discovered pulsars, the rapidly spinning cores of dead stars that emit pulses of light with ultraprecise timing. Decades later, we’re still learning about what matter is like under such extreme conditions: https://tmblr.co/Zz_Uqja0lBwgme00 Image description: In this simulation of a pulsar’s magnetic fields, dozens of thin lines dance around a central gray sphere, which is the collapsed core of a dead massive star. Some of these lines, colored ora

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