Los Alamos Historical Society Lecture Series: History Frontiers. 7:30 p.m., in the Pajarito Room at Fuller Lodge. Galactic Frontiers: “Out of this World,” with Loretta Hall. For more information, call 662-6272 or visit losalamoshistory.org.
Deep Into That Darkness Peering art exhibit. 10 a.m. to 4 p.m. at Fuller Lodge Art Center. Runs through Nov. 16.
Green Hour Hikes. Meet at various local trailheads. 9-11 a.m. at Pajarito Environmental Education Center. For more information, call 662-0460.
Aspen Elementary Groundbreaking Ceremony. 11:30 a.m. at 2182 33rd Street. To RSVP call 663-2275. Refreshments immediately following the ceremony.
The LANL 70th Anniversary Lecture. Retired Los Alamos physicist John C. Hopkins reflects on his Cold War career in the weapons program, 5:30 p.m., Bradbury Museum.
Game Night. 5:30-8:30 p.m. at the Mesa Public Library in the upstairs rotunda.