The Snow Globe Nebula is a planetary nebula 1,500 light-years away. Its transparent ring resembles a snow globe with starlight "snowflakes". It's formed from a dying star shedding its outer layers. It ...

"A system of popular astronomy, selected from the most approved modern authors. To which is added, some useful and interesting observations on natural philosophy. For the use of schools. Revised and ...

Islamicate celestial globes made as early as the eleventh century are found in museums and private collections today. There are also references in classical Greek and Roman literature to carlier ...