Originally published on Sun August 5, 2012 9:49 pm
NASA has three rovers on Mars right now: the twins Opportunity and Spirit, and the Sojourner. Of those three, only Opportunity is operational and is set to be joined by Curiosity on Sunday night.
NPR's Joe Palca will be at NASA's Jet Propulsion Laboratory in California to monitor the Mars mission landing Sunday night at 10:30 p.m. PDT. Palca talks with guest host Linda Wertheimer about the Mars landing and purpose of the mission.