★ 5.5
★ 6.3
★ 7.2
★ 5.3
★ 6.8
★ 6.4
★ 7.0
★ 4.7
★ 6.6
★ 5.9
★ 2.5
★ 6.9
★ 4.6
★ 6.2
★ 4.1
An underground city is built to save a cross-section of humanity as a comet hurtles toward Earth.
