Create your own planet (including size and distance from the Sun) and explore factors that influence planetary temperature. Find out what makes Mars a cold, uninviting place today and change the climate to make it more hospitable to life! This is part of the Laboratory for Atmospheric and Space Physics' (LASP) Project SPECTRA! suite of activities that uses concepts of light and the electromagnetic spectrum to explore our Solar System. Funded by NASA's MAVEN Mission to Mars.