Rocky roads through Lanzarote

Image: Take away the clouds, bulk up the humans with suits and add an orange-red filter and this could be an image from a future mission to Mars. The actual site, the Corona lava tube in Lanzarote, Spain, is closer than one might think to the Red Planet. That's why participants of ESA's Pangaea course came here this week for the third session of their planetary geology training. ESA astronaut Andreas Mogensen, ESA engineer Robin Eccleston and NASA astronaut Kathleen Rubins are this year's studen...