A supernova lit up Earth’s sky in 1054 and was visible in daylight. Hubble now shows its glowing remains are still expanding nearly 1,000 years later

Astronomers used the Hubble Space Telescope to measure the expanding Crab Nebula. New images compared with older ones show ...

China saw a lit-up supernova in 1054. After 1,000 years, NASA finds its remains still moving

Nearly 1,000 years after the 1054 supernova, NASA's Hubble finds the Crab Nebula is still expanding, helping scientists study ...