![Amid the talk about moon missions, Mars fans push for a share of the space spotlight](http://news.littlecdn.com/600x360/1557771184_5cd9b3b01f8b4.jpeg)
Amid the talk about moon missions, Mars fans push for a share of the space spotlight
An artist’s conception depicts a crewed mission to Mars. (NASA / JPL-Caltech Illustration / 2004)
As NASA shifts the focus of its space exploration effort to the moon, the advocates of Mars exploration and settlement have a message for future lunar e...