Comparison of every spacecraft that reached Mars orbit, arranged in chronological order by the dates they entered orbit.
Made in Blender.
Sources:
en.wikipedia.org/wiki/List_of_Mars_orbiters
en.wikipedia.org/wiki/Mars_2
nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1971-045A
mars.nasa.gov/mars-exploration/missions/viking-1-2/
www.jpl.nasa.gov/missions/viking-1
en.wikipedia.org/wiki/Phobos_2
science.nasa.gov/mission/odyssey/
www.esa.int/Science_Exploration/Human_and_Robotic_Exploration/Exploration/ExoMars/Trace_Gas_Orbiter_instruments
www.jpl.nasa.gov/missions/mars-reconnaissance-orbiter-mro