Last year we had Gravity, a chamber music concert compared to this year’s grand oratorio, Interstellar. As we all know, our planet is going to seed, or in this case, dust, and something must be done to save mankind, worthy or not. Epic, each in its way, Gravity’s outer space was intimate, a place for Sandra Bullock to heal with the help of George Clooney, while Interstellar’s is vast and unmanageable: Matthew McConaughey’s Coop is sent out there to fix that, to find a place for human migration. He leaves behind a family, most notably his devoted daughter Murph. Needless to say Interstellar is most successful as a movie when it is grounded in family, maybe because the acting is so good, Murph, young, older and old (Mackenzie Foy, Jessica Chastain, Ellen Burstyn) and the fathers (McConaughey, and Michael Caine to Anne Hathaway’s Amelia Brand). Interstellar is messier in space, maybe because the science is so garbled. Regardless, this movie must be seen as an essential part of this season’s conversation about the trendy subject of our planet’s demise, as well as its layered filmmaking.