哈勃望远镜证实星云通过脉冲恒星扩大. Hubble confirms Crab Nebula expansion via pulsar.

通过哈勃太空望远镜, 天文学家追踪了星云的膨胀过程. 这是一颗超新星残余物, 在1054年首次被观测到. Astronomers using the Hubble Space Telescope have tracked the expansion of the Crab Nebula, a supernova remnant first observed in 1054. 证实星云是由一个中心脉冲恒星驱动的. New images reveal filaments moving at speeds up to 3.4 million miles per hour, confirming the nebula is driven by a central pulsar. 它们可以帮助科学家了解恒星爆炸如何随着时间的推移而演变. This data helps scientists understand how stellar explosions evolve over time.