William Shatner and Wil Wheaton have both submitted their narration for a new NASA video which explains the descent and landing sequence of a new Mars rover, named “Curiosity.”

Curiosity is a one-ton nuclear-powered rover which is set to land on the surface of the red planet, next Thursday, August 5th at approximately 7 p.m. ET.

Watch both videos and let us know who you think does a better job in the poll below.

William Shatner narrates “Curiosity’s Grand Entrance”:

Wil Wheaton narrates “Curiosity’s Grand Entrance”: