A scaled, working model of the solar system built by engineering students at the University of Colorado Boulder will be officially unveiled at Andrews Hall on Feb. 11. The unveiling and dedication of the “grand orrery” is free and open…

A scaled, working model of the solar system built by engineering students at the University of Colorado Boulder will be officially unveiled at Andrews Hall on Feb. 11. The unveiling and dedication of the “grand orrery” is free and open…