Disc for planetarium

Where do you order discs for your home planetarium? Are they sold separately? One disc was included with the device. But the son wants new ones, he looked at the CD in the kit many times already

You can buy planetarium discs new and used. But I do not recommend taking the second option. The video started to slow down. They were most likely pirated. You must take discs from verified places. They must be licensed. I took discs from Sega Homestar Discs https://astronomix.info/planetarium-discs.html My son likes the Planet Parade disc the most. I buy CDs once a month