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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
refutedsupported
the weight of evidence
0 sources for · 3 against

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.

Evidence against · 3
OpenAIRE: Surface erosion caused on Mars from Viking descent engine plume
1980 · cited by 0
The text states that descent engine plumes eroded the Martian surface, refuting that specific design features avoided disturbance.
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How claims like this are judged

Judged against reference works: claims of this kind are settled by the historical reference record, not journal abstracts.

More against · 2
OpenAIRE: Physical Properties of the Martian Surface from the Viking 1 Lander: Preliminary Results
1976 · cited by 0
It mentions pre-mission laboratory tests on surface alterations, but confirms that images showed surface erosion.
OpenAIRE: The effect of spacecraft descent engine plumes on spore transfer to planetary surfaces: Phoenix as a test case
2011 · cited by 0
It notes that Viking engine exhaust plumes violently excavated the soil, contradicting the idea that surface disturbance was avoided.
Everything we examined (4)
  1. OpenAIRE: Surface erosion caused on Mars from Viking descent engine plumepeer-reviewedrefutes
  2. OpenAIRE: Physical Properties of the Martian Surface from the Viking 1 Lander: Preliminary Resultspeer-reviewedrefutes
  3. OpenAIRE: The effect of spacecraft descent engine plumes on spore transfer to planetary surfaces: Phoenix as a test casepeer-reviewedrefutes
  4. OpenAIRE: Viking Mars hydrazine terminal descent engine thermal design considerationspeer-reviewedno side takennot shown: read and judged not to bear on this claim
The paper trail · every fact has a biography
first checked05 Aug 2026
judged → REFUTED · 005 Aug 2026
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