What is the difference between Roentgen, Sieverts and RAD? I've looked it up but I still don't understand what they exactly measure in terms of radioactivity. - Quora
![Radiation environment for future human exploration on the surface of Mars: the current understanding based on MSL/RAD dose measurements | SpringerLink Radiation environment for future human exploration on the surface of Mars: the current understanding based on MSL/RAD dose measurements | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs00159-021-00136-5/MediaObjects/159_2021_136_Fig23_HTML.png)
Radiation environment for future human exploration on the surface of Mars: the current understanding based on MSL/RAD dose measurements | SpringerLink
![Radiation dose measurements taken by MSL/RAD en route to Mars. Panel... | Download Scientific Diagram Radiation dose measurements taken by MSL/RAD en route to Mars. Panel... | Download Scientific Diagram](https://www.researchgate.net/publication/349222162/figure/fig3/AS:1015968214048768@1619237106025/Radiation-dose-measurements-taken-by-MSL-RAD-en-route-to-Mars-Panel-b-is-a-zoomed-in.png)