Christopher Nolan's Interstellar took first place on Friday, though family moviegoers should drive Disney Animation's Big Hero 6 to a weekend win. After two days in limited release, Interstellar expanded to 3,561 locations and earned an estimated $17 million. That's well below Inception's $21.8 million debut, though it is at least roughly on par with Gravity's $17.5 million start last year. Interstellar's audience was split evenly between men (52 percent) and women, and skewed much older (75 percent were at least 25 years of age). They awarded the movie a "B+" CinemaScore, which is in line with Inception.