Resources needed by future expeditions will frequently be situated in potentially hazardous terrain, consequently robotic and human explorers need to land safely near to these resources.

Aside from the prestige such a mission would bring, advocates argue that humans would easily be able to outperform robotic explorers, justifying the expense.

After a few generations of replication, the robotic explorers had got notably off the track of their basic programming.

So without Terry the Astronaut signing up for massive doses of cancer-causing rays, we're left with robotic explorers.

He is also the principal investigator for the $420 million robotic explorer Phoenix which landed at the north pole of the planet Mars on May 25, 2008.

Dr. Goldin replied that other goals had higher priority, but that a robotic explorer might take a look at the face if schedules permitted.

Until recently, interplanetary robotic explorers have largely been marionettes of mission controllers back on Earth.

The game takes place on some sort of alien world and you play as a robotic explorer.

Remember, our robotic explorers travel at virtual light speed.

In 1992 the inside of the volcano was explored by Dante I, an eight legged tethered robotic explorer.