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the claim

Viking Lander descent engines used specific design features to avoid disturbing the Martian surface

the verdict
REFUTED
the evidence says no
Recorded sources
0 sources for · 3 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Viking Lander descent engines used specific design features to avoid disturbing the Martian surface?

No. Scientific literature on the Viking landers shows that their descent engine plumes caused significant erosion and excavation of the Martian surface, refuting the claim that specific design features were used to avoid surface disturbance.

Verdict: REFUTED · 0 sources for, 3 against · Last checked

How claims like this are judged

Judged against reference works: claims of this kind are settled by the historical reference record, not journal abstracts.

Evidence against · 3
OpenAIRE: Surface erosion caused on Mars from Viking descent engine plume
1980
The text states that descent engine plumes eroded the Martian surface, refuting that specific design features avoided disturbance.
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OpenAIRE: Surface erosion caused on Mars from Viking descent engine plume. (1980). OpenAIRE. https://doi.org/10.1007/bf00902045

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More against · 2
OpenAIRE: Physical Properties of the Martian Surface from the Viking 1 Lander: Preliminary Results
1976
It mentions pre-mission laboratory tests on surface alterations, but confirms that images showed surface erosion.
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OpenAIRE: Physical Properties of the Martian Surface from the Viking 1 Lander: Preliminary Results. (1976). OpenAIRE. https://doi.org/10.1126/science.193.4255.805

OpenAIRE: The effect of spacecraft descent engine plumes on spore transfer to planetary surfaces: Phoenix as a test case
2011
It notes that Viking engine exhaust plumes violently excavated the soil, contradicting the idea that surface disturbance was avoided.
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OpenAIRE: The effect of spacecraft descent engine plumes on spore transfer to planetary surfaces: Phoenix as a test case. (2011). OpenAIRE. https://doi.org/10.1017/s1473550411000188

Receipt History
first checked05 Aug 2026
judged → REFUTED · 005 Aug 2026
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