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Paul M. Dirac Speaking to F. Hund on Symmetry in Relativity, Quantum Mechanics and Physics of Elementary Particles. Filmed in Göttingen around 1982. Abstract... ... See MoreSee Less

Hubble Space Telescope
No, that’s not a beating heart or a shimmering aurora. This video, created from a sequence of Hubble images, shows a pulse of light emanating from a still-forming star hidden at lower left. The light pulse propagates outward over the course of a month, reflecting surrounding dust clouds toward us.

Astronomers propose that the flash was due to material from a circumstellar disk suddenly being dumped onto the growing star, causing it to unleash a blast of radiation. bit.ly/2E0uzBn
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