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'Are we alone in the universe?' NASA's 2020 Mars rover, a $2.5B robotic astronaut, is being built to help us find out

December 30, 2019 USATODAY - News Top Stories

Chris Woodyard, USA TODAY 'Are we alone in the universe?' NASA's 2020 Mars rover, a $2.5B robotic astronaut, is being built to help us find out

The Mars 2020 rover, nearing completion at NASA's Jet Propulsion Laboratory in California, will soon embark on an ambitious mission to the red planet.