Tuesday, October 27, 2026

1975-08-20 · 51 years ago

Viking 1 — launch

Date in UTC

Viking 1 is the first of two spacecraft, along with Viking 2, each consisting of an orbiter and a lander, sent to Mars as part of NASA's Viking program. The lander touched down on Mars on July 20, 1976, the first successful Mars lander in history. Viking 1 operated on Mars for 2,307 days (over 61⁄4 years) or 2245 Martian solar days, the longest extraterrestrial surface mission until the record was broken by the Opportunity rover on May 19, 2010. Following launch using a Titan/Centaur launch vehicle on August 20, 1975, and an 11-month cruise to Mars, the orbiter began returning global images of Mars about five days before orbit insertion.

Wikipedia: https://en.wikipedia.org/wiki/Viking_1. Related NASA reference: https://science.nasa.gov/mission/viking-1/. Description adapted from Wikipedia contributors (CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/).

Category
Launches and Flight Tests
Type
Orbital launch
Subjects
Space transportation
Mission
Viking 1
Organization
NASA Lewis Research Center
Participants
USAF Space and Missile Systems Organization
Vehicle
Titan IIIE
Location
Cape Canaveral Air Station, Florida
Country
US
Outcome
Successful

Context and qualifications

Launch code: DS. Source references: AFT3; TR-1022.

Sources and attribution

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