“MERCURY has a small intrinsic field but no atmosphere, there the solar wind interacts directly with the surface and exosphere.”
https://link.springer.com/article/10.12942/lrsp-2007-1
“MERCURY has a small intrinsic field but no atmosphere, there the solar wind interacts directly with the surface and exosphere.”
https://link.springer.com/article/10.12942/lrsp-2007-1