https://www.newscientist.com/article/mg23831801-200-we-need-to-grab-some-rocks-from-mars-lets-just-get-on-with-it/

IT’S getting busier on Mars. The European Space Agency’s ExoMars orbiter is sniffing the Red Planet’s air for signs of methane. And NASA’s InSight lander is en route to expand knowledge of our neighbour’s geophysics.

But all that activity, along with that of rovers already there, won’t offer solid answers to the big question: is there life, extinct or extant?