Science: One Hit, One Miss

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As Mars moved into a favorable position last summer, the Russians sent four unmanned space ships on six-month voyages toward the Red Planet.

Last week the Russians disclosed that the first two craft had reached their destination. One of the ships, Mars 5, went into orbit around Mars, they reported, but the other, Mars 4, soared past it into deep space. Reason: Its braking rocket failed to fire.

Despite that mishap, the multiple Mars mission may well be successful. According to the Russians, Mars 4 came within 1,400 miles of Mars, close enough to take an undisclosed number of pictures. Furthermore, the two remaining probes—Mars 6 and 7—have yet to make then" rendezvouswith the planet.

Earlier reports had indicated that both were scheduled to land and possibly photograph the surface. Mars 4 and 5, on the other hand, were orbiters designed to relay data back to earth from the Martian terrain. Thus, the Russians may still be able to use their single successful orbiter, Mars 5, as a radio link if at least one of the landers succeeds in its assignment.