On Monday, a spacecraft called InSight will arrive at Mars and, if all goes well, land on the surface. Insight is the latest in a long line of probe that have been investigating the planet, carrying instruments that will build on what earlier spacecraft have discovered.
But this satellite isn’t alone. Its mission is not only redefining what humanity knows about Mars, it is breaking new ground in the way our species explores the solar system.
Read more at Popular Mechanics