Comparison of every spacecraft that reached Mars orbit, arranged in chronological order by the dates they entered orbit.

Made in Blender.

Sources:
https://en.wikipedia.org/wiki/List_of...
https://en.wikipedia.org/wiki/Mars_2
https://nssdc.gsfc.nasa.gov/nmc/space...
https://mars.nasa.gov/marsexploratio...
https://www.jpl.nasa.gov/missions/vik...
https://en.wikipedia.org/wiki/Phobos_2
https://science.nasa.gov/mission/odys...
https://www.esa.int/Science_Explorati...
https://www.jpl.nasa.gov/missions/mar...