Still playing around with Celestia. It’s easy to get lost in this stuff. You can turn on planet orbits, which helps in getting oriented. You can zoom in on objects like the International Space Station (above) and track their movements. You can turn on constellation outlines. You can make time go 100,000 times faster than normal. And on and on. Unbelievable for a free program.
Sometimes I just zoom in on the space station and keep the program running in the background, watching as the station inches across the sky.

