2. MARS 2
 EERST
 Lancering: 19 mei 1971
 Landing: 27 november 1971
 Onbemand
 USSR

3. Lancering
 PROTON
 Kosmodroom Bajkonoer

4. Onderdelen
Orbiter
 Baan rond Mars
 3440 kg
 MISLUKT
 Doelen

5. Onderdelen
Lander
 358 kg
 Doelen
 Problemen
 Neergestort

7. Bronnen
Fotobronnen:
 Dia 1:
Sonde: NASA,
http://nssdc.gsfc.nasa.gov/image/spacecraft/mars3_iki.jpg
 Dia 2:
Postzegel: Andrew Butk,
http://commons.wikimedia.org/wiki/File:Soviet_Union-1972-Stamp0.06._Mars_2.jpg
 Dia 3:
- Eerste raket: Ofuku , http://en.wikipedia.org/wiki/File:H-IIA_Family.png
- Tweede raket: NASA, http://images.ksc.nasa.gov/photos/2000/high/KSC00PD-5028.jpg
- Derde raket: NASA, http://en.wikipedia.org/wiki/File:EnergiaPolyus_drawing.png
- Kaart: Federal Government USA,
http://upload.wikimedia.org/wikipedia/commons/7/76/Baikonur_in_kaza
khstan_map_2000.jpg
 Dia 4: USGS: http://astrogeology.usgs.gov/maps
 Dia 5: Lander: NASA
http://nssdc.gsfc.nasa.gov/image/spacecraft/mars3_lander_vsm.jpg

8. Bronnen
Tekstbronnen:
 NSSDC/COSPAR ID: 1971-045A, NASA,
http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1971045A
 Mars 2 crash lands on Mars, EDN network,
http://www.edn.com/electronics-blogs/ednmoments/4402026/Mars-2-crash-lands-on-Mars--November-27--1971