NASA is announcing 60 winning teams for its third TechRise Student Challenge, a nationwide contest to engage students in technology, science, and space exploration. The student teams will work together to turn their proposed science and technology experiments into reality ahead of NASA-sponsored suborbital flight tests this summer. The challenge opened for submissions in August to students in grades six through 12 at U.S. public, private, or charter schools, including those in U.S. territories. The winning teams include more than 490 students representing 46 states and territories. Their exper…