Space race: How close is the US going to Mars?

Ever since humans first landed on the moon in 1969, Mars has been the next terrestrial body destined for human visitation.

Related Keywords

United States ,China ,Elon Musk ,Pam Melroy ,Shepard Smith ,Gwynne Shotwell ,Cornell Um Wolff ,National Aeronautics ,Twitter ,Spacex ,Space Administration ,China Rover ,Administrator Pam Melroy ,Spacex President ,Chief Operating Officer Gwynne Shotwell ,Relativity Space ,Impulse Space ,