Monday afternoon NASA is expected to launch MAVEN, a spacecraft that will travel to Mars to better understand the Red Planet’s atmosphere. The launch is scheduled for a two-hour window from 1:28-3:28 p.m. Eastern time. Watch it live here. Also check out NASA’s live blog of the launch.

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An Atlas V rocket carrying MAVEN spacecraft is readied for launch at the Cape Canaveral Air Force Station in Cape Canaveral, Fla. (Joe Skipper/Reuters)