Recordeddatespace
Mariner 4 passes Mars — the first close-up images of another planet
Returned 21 photographs of a cratered surface, ending the era of canal speculation in a single pass. Encounter class: flyby.
Historical — it happened, and the record is settled.
Subjects
Evidence
Partly verified — Core facts are sourced; some optional detail is deliberately absent.
NSSDCA master catalogue — Mariner programme
Launch dates, flyby dates and gravity-assist record for the Mariner planetary flybys.
NASA Space Science Data Coordinated Archive · Partly verified
NSSDCA master catalogue, Mariner 2, 4 and 10 entries