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Historical caseStructured for retrospective review and comparison against modern sightings.

Antônio Vilas-Boas - The man from Brazil whom the alien lady could not resist

Unknown1 witnessSighting reportOct 16, 1957, 12:00 AMSão Francisco de Sales, Brazil

Witnesses

1 witness

Duration

Unknown

Source material

3

Timeline

2

Source context

Limited context

48

Interesting, but still missing stronger corroboration or harder source material.

Source provenance

r/aliens

Live sighting record dd25a412-2a9c-45c2-acf6-792dd4b4d038.

Using the selected case's real source, media, and context throughout the workspace.

Correlations

Field Intelligence

Moon phase

54% illumination

Last quarter — moderate moon brightness

Solar window

Sunrise5:49 AM
Sunset6:22 PM
Day length12h 33m

Weather

Open-Meteo
ConditionsMainly clear
Temperature78°F
Cloud cover26% · Mostly clear
Wind5 mph

Area activity

Within 2 daysNo sightings within 60 mi

Extracted details

Observed facts

Occurred

Oct 16, 1957, 12:00 AM

Timezone

Brasilia Standard Time

Location

São Francisco de Sales, Brazil

Observers

1 witness

Witness account

Narrative

​ In 1957, Vilas-Boas, a Brazilian farmer, claimed that while working at night in the fields near São Francisco de Sales, he encountered a strange object: A bright, egg-shaped UFO landed nearby . Small humanoid beings (about 1–1.5 meters tall) in suits approached himHe tried to flee on his tractor but was captured Inside the UFO He said he was taken aboard the craft, where his clothes were removed . And a gel-like substance was applied to his body Blood samples were taken then came the most c...

Case progression

Timeline

Encounter windowOct 16, 1957, 12:00 AM

Witnesses place the encounter near São Francisco de Sales, Brazil.

PublishedApr 9, 2026, 11:57 AM

r/aliens carried the report into the source network.

Ledger

Source material

media

Cover image

Open

Visual reference carried with the original report.

source

Original report

Open

Direct source material from r/aliens.

telemetry

Environmental pass

Historical atmosphere, astronomy, and nearby infrastructure were resolved for this case.