'Gravity Falls' is the perfect show for the start of summer There's mystery afoot in Gravity Falls. Image: disney channel via getty images/mashable composite All products featured here are independently selected by our editors and writers.If you buy something through links on our site, Mashable may earn an affiliate commission. Summer is just around the corner, and there's no better way to celebrate than by watching Gravity Falls. Airing from 2012 to 2016, Gravity Falls is a show that captures the feeling of childhood summer vacation in all its glory: going on adventures, spending time with family members, and fighting off interdimensional chaos demons.