Viking 1

Viking 1 was 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 or 2245 Martian solar days, the longest extraterrestrial surface mission until the record was broken by the Opportunity rover on May 19, 2010.

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Viking-B
space mission, 

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Frameless

This is an artist's conception of the sequence of events that will take place just prior to landing a life-detection laboratory on the surface of Mars on July 4, 1976.

Viking I Spacecraft in Cleanroom - GPN-2000-001630

KENNEDY SPACE CENTER, FLA. -- Closeup view shows mated Viking Lander (top) and Orbiter in Kennedy Space Center Spacecraft Assembly and Encapsulation Facility.

Viking 1 Orbiter and Lander attached, ovale bulge at the top is lander

KENNEDY SPACE CENTER, FLA. -- Technicians prepared for removal of Viking Lander 1's aeroshell cover in KSC's Spacecraft Assembly and Encapsulation Facility 2 (SAEF-2) today.

MarsAtmosphere T Profile Pathfinder

PIA00170-MC-10-LunaePalusRegion-19980605

Schiaparelli crater by Viking orbiter

ESP 016512 1905 (33591775255)

Viking I Probe Model.

• Composition and structure of the martian atmosphere: preliminary results from viking 1. - scientific article (Q1860)
• Structure of the neutral upper atmosphere of Mars: results from viking 1 and viking 2. - scientific article published on December 1976 (Q1860)
• Argon Content of the Martian Atmosphere at the Viking 1 Landing Site: Analysis by X-ray Fluorescence Spectroscopy - scientific article published on 01 August 1976 (Q1860)

Type	Subtype	Date	Description	Notes	Source
incident	incident		[[1]]		Wikidata
commons	image		This is an artist's conception of the sequence of events that will take place just prior to landing a life-detection laboratory on the surface of Mars on July 4, 1976.		Commons
commons	image		Viking I Spacecraft in Cleanroom - GPN-2000-001630		Commons
commons	image		KENNEDY SPACE CENTER, FLA. -- Closeup view shows mated Viking Lander (top) and Orbiter in Kennedy Space Center Spacecraft Assembly and Encapsulation Facility.		Commons
commons	image		Viking 1 Orbiter and Lander attached, ovale bulge at the top is lander		Commons
commons	image		KENNEDY SPACE CENTER, FLA. -- Technicians prepared for removal of Viking Lander 1's aeroshell cover in KSC's Spacecraft Assembly and Encapsulation Facility 2 (SAEF-2) today.		Commons
commons	image		MarsAtmosphere T Profile Pathfinder		Commons
commons	image		PIA00170-MC-10-LunaePalusRegion-19980605		Commons
commons	image		Schiaparelli crater by Viking orbiter		Commons
commons	image		ESP 016512 1905 (33591775255)		Commons
commons	image		Viking I Probe Model.		Commons