The type of vehicle that will carry people to the Red Planet is shaping up to be “like a two-story house you’re trying to land on another planet. The heat shield on the front of the vehicle is just over 16 meters in diameter, and the vehicle itself, during landing, weighs tens of metric tons. It’s huge,” said Ashley Korzun, a research aerospace engineer at NASA’s Langley Research Center.
Source:
https://phys.org/news/2019-10-summit-supercomputer-simulates-humans-mars.html