Lukegao1
创建页面，内容为“ Stellarium is a popular open-source planetarium software that allows you to simulate the night sky on your computer. If you want to add Comet ISON to Stellarium, you can follow these steps: 1. Make sure that you have the latest version of Stellarium installed on your computer. You can download it from the official Stellarium website. 2. Download the Comet ISON orbital elements file from a reliable source. One option is the Minor Planet Center (MPC) website,…”