"Any future explorers will have a wonderful resource there," he said.

He envied those future explorers the depth of their knowledge.

That would be a problem for future explorers, and he wished them luck.

It raises the questions of where the water comes from and whether it could be used as a resource for future explorers.

With this information mapped, future explorers and paleontologists should have no trouble returning for further digging.

The sundials are also "message artifacts"-something for future human explorers.

Maybe some future explorer will find our bones, she contemplated, grimly.

Theoretical studies are primarily directed to parameterizing the problem for future planetary explorers.

I look on this water from another world as an encouragement for future explorers and settlers.

It was intended as a gift for future human explorers.