★ 5.7
★ 5.8
★ 6.8
★ 6.2
★ 5.9
★ 7.1
★ 7.0
★ 6.9
★ 4.6
★ 6.4
★ 4.1
★ 2.5
An underground city is built to save a cross-section of humanity as a comet hurtles toward Earth.