Unknown
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Active leadUseful case file with unresolved ambiguity and room for more corroboration.

Over Houston in 2021, both pilots of a Boeing 737 saw a large oblong spheroid resembling molten mercury with a morphing surface, accelerate instantaneously

Unknown2 witnessesSighting reportMay 8, 2021, 11:35 PMHouston, Texas

Witnesses

2 witnesses

Duration

Unknown

Source material

3

Timeline

3

Source context

Limited context

51

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

Source provenance

r/UFOs

Live sighting record 3c1d0ea5-5228-4bbd-887b-b2188e2f6bd9.

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

Correlations

Field Intelligence

Sunlight window

Daytime — sun above horizon

Sighting occurred during daylight hours

Solar window

Sunrise6:34 AM
Sunset8:04 PM
Day length13h 30m

Weather

Open-Meteo
ConditionsPartly cloudy
Temperature79°F
Cloud cover71% · Mostly cloudy
Wind20 mph

Area activity

Within 2 daysNo sightings within 60 mi

Meteor activity

Active showerEta Aquariids · 50 ZHR
Peak windowMay 6

Context notes

Eta Aquariids meteor shower was active at this time

Extracted details

Observed facts

Occurred

May 8, 2021, 11:35 PM

Timezone

Central Time

Location

Houston, Texas

Observers

2 witnesses

Witness account

Narrative

Time: 7:35 PM May 8, 2021 Location: departing Houston Hobby Airport A Boeing 737 crew encountered a large, metallic, oblong spheroid while climbing through 14,000 feet after departing Houston Hobby Airport. ATC urgently directed the aircraft to level off, reporting an unidentified target closing on their position that had been "popping up all day." The object, described as resembling molten mercury with a morphing surface, accelerated instantaneously from a stationary hover and departed at ex...

Case progression

Timeline

Encounter windowMay 8, 2021, 11:35 PM

Witnesses place the encounter near Houston, Texas.

PublishedApr 12, 2026, 12:44 PM

r/UFOs carried the report into the source network.

Signal attachment

Tracked inside the Boeing 737 Crew Encounters Large Metallic Spheroid, ATC Issues Collision Warning signal.

Ledger

Source material

media

Cover image

Open

Visual reference carried with the original report.

source

Original report

Open

Direct source material from r/UFOs.

telemetry

Environmental pass

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