Not many people have a planetarium in their homes. But most Madison Metropolitan School District students have a Chromebook. And as MMSD planetarium director Geoff Holt has adapted the venueâs programming for the virtual world people have operated in since March, that means students have more access to explore astronomy through the new modeling program heâs had to use. âIâm even teaching them how to use this so if they have questions like, âWhat would the sky have looked like on the day I was born?â They can actually check that themselves,â Holt said. âTeaching them how to use that tool to answer their own questions even after the program has been kind of fun.â