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.

This is current stable version based on Qt 5.  For the previous, Qt 4 based
one, please install `astro/stellarium-qt4' port instead.

WWW: http://www.stellarium.org/