Watch a clip from Episode 3 “Darkness Falls” from National Geographic’s “Mars” season 2.

When a solar flare strikes the planet and knocks out communications between and within colonies, the Olympus Town team races against the clock to locate exobiologist/geologist Marta Kamen (Anamaria Marinca), who becomes stranded on the surface during a rogue research expedition.

Meanwhile, the colony is bracing for its first-ever pregnancy on the Red Planet; tragedy strikes Hana (Jihae); and Amelie’s (Clémentine Poidatz) plans to return to Earth are thwarted.

In present day, a scientist and his team on Earth brave harsh and dangerous conditions in the pursuit of data that will help predict the effects of glacial melt on global sea levels.

National Geographic’s MARS SEASON 2 
Airs On Mondays at 9/8 p.m. C on National Geographic Channel