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Our First-Ever Missions to Mars, and What We Learned From Them

A lot of our knowledge of the inner solar system was gained fairly recently, and the Mariner program led the way!

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Alexander Wadsworth, Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Sultan Alkhulaifi, Tim Curwick, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George
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Sources:
http://gizmodo.com/this-paint-by-numbers-drawing-was-the-very-first-image-1687904838
https://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1964-077A
https://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1969-014A
https://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1971-051A
https://nssdc.gsfc.nasa.gov/planetary/mars/mariner.html
https://www.forbes.com/sites/kionasmith/2017/05/30/the-mariner-9-spacecraft-and-the-race-to-mars/#288337d14fa2
https://www.jpl.nasa.gov/mariner2/

Images:
https://commons.wikimedia.org/wiki/File:Solarsystemobjectsinscale.jpg
https://commons.wikimedia.org/wiki/File:Apollo16LM.jpg
https://commons.wikimedia.org/wiki/File:Mariner_5.jpg
https://commons.wikimedia.org/wiki/File:Atlas_Agena_with_Mariner_1.jpg
https://commons.wikimedia.org/wiki/File:Mariner_2.jpg
https://commons.wikimedia.org/wiki/File:Mariner_2_radiometric_scans.png
https://commons.wikimedia.org/wiki/File:Mariner_3_and_4.jpg
https://commons.wikimedia.org/wiki/File:Mariner_4_Launch_Preparations.jpeg
https://commons.wikimedia.org/wiki/File:Mariner_4_craters.gif
https://commons.wikimedia.org/wiki/File:First_TV_Image_of_Mars.jpg
https://commons.wikimedia.org/wiki/File:Mariner_6-7.png
https://commons.wikimedia.org/wiki/File:Mars_full_disk_approach_view_from_Mariner_7.jpg
https://mars.nasa.gov/multimedia/images/?ImageID=6773
https://commons.wikimedia.org/wiki/File:Mariner8_launch.jpg
https://commons.wikimedia.org/wiki/File:Mariner09.jpg
https://commons.wikimedia.org/wiki/File:M09_mtvs4187_45.gif
https://commons.wikimedia.org/wiki/File:Mariner_10_transparent.png
https://commons.wikimedia.org/wiki/File:Voyager_spacecraft.jpg
https://commons.wikimedia.org/wiki/File:Outersolarsystem-probes-4407b.svg
https://commons.wikimedia.org/wiki/File:Viking_spacecraft.jpg
https://commons.wikimedia.org/wiki/File:Mars_Viking_12a002.png
https://www.nasa.gov/directorates/heo/scan/services/missions/solarsystem/Cassini.html
https://commons.wikimedia.org/wiki/File:Mars_Valles_Marineris.jpeg
https://commons.wikimedia.org/wiki/File:Mariner_10_gravitational_slingshot.jpg

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