Mars Missions Table
| Mission | Year | Agency | Landmark |
|---|---|---|---|
| Mariner 4 | 1965 | NASA | first flyby images - 21 pictures, craters not canals |
| Mariner 9 | 1971 | NASA | first spacecraft to orbit another planet |
| Mars 3 | 1971 | USSR | first soft landing (signal lasted ~20 seconds) |
| Viking 1 & 2 | 1976 | NASA | first long-lived landers; onboard life experiments |
| Mars Pathfinder + Sojourner | 1997 | NASA | first rover on Mars |
| Mars Odyssey | 2001- | NASA | longest-serving spacecraft at Mars |
| Spirit & Opportunity | 2004 | NASA | twin rovers; Opportunity drove 45 km, a off-world record |
| Mars Express | 2003- | ESA | Europe's first Mars orbiter; radar found buried ice |
| Mars Reconnaissance Orbiter | 2006- | NASA | HiRISE: Mars mapped at pedestrian scale |
| Phoenix | 2008 | NASA | dug water ice from the polar soil |
| Curiosity (MSL) | 2012- | NASA | nuclear rover; proved Gale Crater was habitable |
| MAVEN | 2014- | NASA | measured how solar wind stripped the atmosphere |
| Mangalyaan (MOM) | 2014-2022 | ISRO | India first to Mars orbit on first try, at cut-rate cost |
| ExoMars TGO | 2016- | ESA | trace-gas orbiter mapping methane |
| InSight | 2018-2022 | NASA | first marsquakes measured; mapped the core |
| Perseverance + Ingenuity | 2021- | NASA | sample caching; first powered flight on another planet |
| Tianwen-1 / Zhurong | 2021- | CNSA | China's first orbit-land-rover attempt, all successful |
| Hope (Al-Amal) | 2021- | UAE | first Arab interplanetary mission, weather imaging |
Mars is the most-visited world beyond the Moon and the hardest to reach: of the 60-plus missions launched since 1960, roughly half failed before returning data - the 'Mars curse' that makes every first in this table take a decade or a generation. The ladder runs: first flyby (Mariner 4, 1965), first orbit (Mariner 9, 1971), first landing (Mars 3, 1971 - twenty seconds of signal), first working landers (Viking, 1976), first rover (Sojourner, 1997).
Five rovers have driven on Mars, and the lineage is the program's spine: Sojourner (1997) proved the concept at the size of a microwave; the twins Spirit and Opportunity (2004) turned a 90-day plan into years - Opportunity alone covered 45 kilometers across 14 years; Curiosity (2012) went nuclear and proved Gale Crater was once habitable; Perseverance (2021) is caching samples for the round trip, and its passenger Ingenuity flew the first powered aircraft on any other planet - 72 flights against an engineering goal of five.
The newest rows show Mars becoming a crowd: the 2020-2021 window delivered NASA's Perseverance, China's Tianwen-1 with the Zhurong rover (orbit, landing and roving on the first attempt - a program first for anyone), and the UAE's Hope orbiter, the first Arab interplanetary mission. All three arrived together because Mars transfer windows open only every 26 months; the same physics scheduled the Viking twins in 1975 and will queue the next wave.
How to use
- Read the table by agency column for the geopolitical story: NASA's unbroken chain since 1964, the USSR's pioneering-but-fragile 1960s-70s run, ESA's steady orbiter program since 2003, and the 2014-2021 entries (India, China, UAE) that made Mars a four-agency arena.
- Use the Year column with the 26-month rhythm: launches cluster - 1975 (Vikings), 2003 (Express + the MER twins), 2020-21 (the three-arrival window). Anything between clusters was an orbiter or a failure.
- Answer the classics from the rows: first pictures = Mariner 4 (21 grainy frames); first successful landers = Viking 1 & 2 (1976, with onboard life experiments that still argue); first rover = Sojourner; the record drive = Opportunity's 45 km; the first flier = Ingenuity.
- Note the honest failures between the rows: Mars 96, Mars Climate Orbiter (the metric-imperial loss), Beagle 2, Schiaparelli - each taught a lesson the next landing used. Half the table is invisible lessons.
Frequently asked questions
What are the names of the five Mars rovers?
Sojourner (1997), Spirit and Opportunity (2004), Curiosity (2012) and Perseverance (2021) - all NASA. Sojourner was microwave-sized; Opportunity holds the off-world driving record at about 45 kilometers over 14 years; Curiosity runs on a radioisotope generator; Perseverance carries the sample-caching drill and deployed the Ingenuity helicopter.
When did humans first land something on Mars?
December 2, 1971 - the Soviet Mars 3 lander touched down and returned about 20 seconds of signal before going silent, likely killed by a dust storm. The first landers that actually worked were NASA's Viking 1 and 2 in 1976, which ran for years and carried the first (still-debated) life-detection experiments.
How many missions to Mars have succeeded?
Counting flybys, orbiters, landers and rovers, roughly half of the 60-plus attempts have returned data - NASA's success rate is far above the field's, around two-thirds and near-perfect since the late 1990s; everyone else's is spottier. Orbiters succeed far more often than landings, which is why 'first landing' milestones are decades apart in the table.
Why do Mars missions launch every 26 months?
Orbital mechanics: Earth and Mars line up for the minimum-energy transfer roughly every 26 months. Miss everything and you wait - which is why arrivals cluster in waves (1971, 1976, 2003-04, 2021) and why the 2020 window carried three agencies' flagships at once.