The agency said Feb. 7 it awarded a contract valued at up to $194 million to Lockheed to develop the Mars Ascent Vehicle (MAV), an essential element of the overall Mars Sample Return campaign being developed by NASA and the European Space Agency. The MAV will be transported to Mars on a NASA-led Sample Retrieval Lander, which will also carry an ESA-developed rover. That rover will pick up samples of Martian rock and regolith cached by Perseverance and return them to the lander. Perseverance may also return some samples to the lander on its own. Those samples will be loaded...