This goal would be reached through three phases, where the first would deal with robotic exploration during the 1990s to find a suitable site.

Explore the solar system for scientific purposes while supporting safe robotic and human exploration of space.

The program is a long-term mission of robotic exploration of Mars.

Most of the displays take the form of robotic exploration.

Whale falls were first observed in the 1980s, with the advent of deep-sea robotic exploration.

As envisioned, the robotic exploration of Mars in the 1990's would cost up to $10 billion.

For the robotic exploration of Mars, such programs are already under way.

It is the primary United States research and development center for the robotic exploration of the solar system.

They'd hold out to the last that robotic exploration might be okay for Earth, but not for Mars.

"Going vicariously is not quite as good as being there," the 55-year-old engineer said of robotic exploration.