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Evidence map

Every citation behind the score, with its stance, evidence mass mᵢ, recency-decayed mass, and share of the total. The score is reproducible from exactly these rows.

4 citationsDecayed mass Mₚ = 5.8Center Xₚ = +0.18Calibration W₀ = 30, T = 80y
MixedFramework· 1965mᵢ 2.00.9 · 16%

The radio search for intelligent extraterrestrial life

Drake · Current Aspects of Exobiology · 61y old

Organises the factors bearing on the prevalence of communicative civilisations; a structure, not an estimate.

MixedObservational survey· 2011mᵢ 2.52.1 · 36%

Characteristics of planetary candidates observed by Kepler

Borucki et al. · The Astrophysical Journal · 15y old

Establishes that planets, including Earth-sized ones in habitable zones, are common — necessary but not sufficient for life.

MixedReview· 2016mᵢ 2.01.8 · 30%

Alien mindscapes — a perspective on the search for extraterrestrial intelligence

Cabrol · Astrobiology · 10y old

Reviews biosignature strategies; concludes no confirmed detection exists to date.

SupportsPrimary (contested)· 1996mᵢ 1.51.0 · 18%

Search for past life on Mars: possible relic biogenic activity in martian meteorite ALH84001

McKay et al. · Science · 30y old

Reported possible microfossils in a Martian meteorite; non-biological explanations are widely considered more likely.