Stellarium Posted on July 28, 2018 by quaezar InScience links Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. It is being used in planetarium projectors. Just set your coordinates and go. Read more.. About Author quaezar Leave Comment Cancel reply Comment ( * )Name Email Website Yes, add me to your mailing list.