50光年远的飞马51星
2021年10月9日 50 Light-years to 51 Pegasi Image Credit & Copyright: Josselin Desmars Explanation: It’s only 50 light-years to 51 Pegasi. That star’s position is indicated in this snapshot from August, taken on a hazy night with mostly brighter stars visible above the dome at Observatoire de Haute-Provence in France. Twenty-six years ago, in Oct...