Add Yahoo as a preferred source to see more of our stories on Google. NASA's Viking landers were the first spacecraft to successfully touch down on the surface of Mars. NASA/JPL-Caltech via AP Finding ...

(CNN) — Here’s a look at the exploration of Mars. The United States, Soviet Union and China are the only three countries to land a spacecraft on Mars. There have been nine successful US Mars landings: ...

Describes the transferal of ownership of the Viking 1 Lander on Mars to the National Air and Space Museum. https://siris-sihistory.si.edu/ipac20/ipac.jsp?&profile=all ...

Discusses the transfer of ownership of the NASA Viking 1 lander located on the surface of Mars to the National Air and Space Museum in order to keep the spacecraft in its present location so that ...

Finding life beyond Earth would be a major scientific discovery with significant implications for all areas of science and human thought. Yet, only one direct search for extraterrestrial life has ever ...