Timeline
The record, in order.
Events are dated; interpretations stay attached to their topic pages.
Project Blue Book
Project Sign begins the Air Force's postwar investigation of reported flying objects.
Roswell
Debris is recovered; the Roswell Army Air Field first announces a flying disc, then identifies a weather balloon.
Project Blue Book
Project Blue Book begins under that name.
Project Blue Book
The Air Force terminates Project Blue Book.
Majestic 12
The alleged MJ-12 documents become publicly known.
Majestic 12
Archival searches document provenance problems and fail to locate corroborating records.
Roswell
The Air Force reviews records and publishes its balloon and anthropomorphic-dummy explanations.
The Navy videos
The encounter associated with the FLIR video occurs.
The 2021 ODNI assessment
The assessment's reporting window.
The Navy videos
The encounters associated with GIMBAL and GOFAST occur.
The Navy videos
DoD formally releases the three unclassified videos.
The 2021 ODNI assessment
ODNI releases the preliminary assessment to Congress and the public.
NASA's independent study
NASA commissions the independent study team.
AARO's historical review
Congress establishes AARO's current organizational mandate.
The 2023 House hearing
The House subcommittee holds its public UAP hearing.
NASA's independent study
The team releases its final report.
Roswell
AARO's historical review again reports no verified evidence of extraterrestrial technology or a hidden recovery program.
The 2023 House hearing
AARO publishes a historical report reaching conclusions that conflict with major recovery-program allegations.
AARO's historical review
AARO publishes Volume I of its historical record report.