Support astronomer at Keck, Greg Doppmann, explains the basic idea of spectroscopy to his daughter, 2 and a half year old Liana.
Mike Dahler, mechanical engineer at Keck, helps a young visitor as he makes a key ring using 15 tons of pressure, just one of the many interactive demonstrations at the Keck Open House event on Saturday.
Destiny White, visiting from Texas, studies a interactive planet display at the Imiloa exhibit at the Keck Open House on Saturday.
