This is the first close-up image ever taken of Mars. It shows an area
about 204 miles across by 745 miles.

NASA’S Mariner 4 successfully headed for Mars on Nov. 28. The 574-pound 
spacecraft spent more than seven months traveling to the Red Planet. On
July 14, 1965 Mariner 4 spent just 25 minutes performing observations of
Mars.  In that brief time, it took 21 full pictures that it beamed back to Earth
the next day. The spacecraft’s views would be the first ones beamed back
from another planet.

Mariner 4