The lonely Curiosity rover is poised to get a companion on Mars in September 2016 -- so long as NASA's next mission, InSight, goes as planned.

Where Curiosity has been tasked with exploring the surface of Mars, a second rover is needed to probe its innards.

"We're really clueless about the interior," said NASA director of Planetary Science Jim Green.

And by 2016, us earthlings will be more than ready for a little Red Planet romance.

[themarysue]