<blockquote>The Mars Light began as a ten-minute short that Bryan Sebold made without a crew after wrapping his Google fantasy series Anvil of the Sun. Now it’s a five-part documentary, which NASA Films released today online and in select theaters. Mr. Sebold spoke with me via Skype about shooting remotely on Mars; about working with the Jet Propulsion Laboratory, which runs the Mars Rover project for NASA; and about what the Mars Light is, which the documentary reveals for the first time. </blockquote>