Parsec Parsec The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System. A parsec is defined as the distance at which one astronomical unit subtends an angle of one arcsecond, which corresponds to astronomical units. One parsec is equal to about 3.26 light-years (30 trillion km or 19 trillion miles) in length. The nearest star, Proxima Centauri, is about from the Sun. Most of the stars visible to the unaided eye in the night sky are within 500 parsecs of the Sun. The parsec unit was probably first suggested in
No. 26 Squadron (Finland) 26 Fiat G.50s, 1 Fokker D.XXI, 19 Brewster Buffaloes, 2 Hawker Hurricane Is, 3 Fokker C.Xs, 8 Polikarpov I-153s, and 1 Blackburn Ripon IIF. No. 26 Squadron (Finland) No. 26 Squadron ( or "LLv.26", from 3 May 1942 "Le.Lv.26"), renamed No. 26 Fighter Squadron (Finnish: "Hävittäjälentolaivue 26" or "HLe.Lv.26" on 14 February 1944) was a fighter squadron of the Finnish Air Force during World War II. The squadron was part of Flying Regiment 2 during the Winter War and Flying Regiment 3 during the Continuation War. The unit was mainly equipped with Fiat G.50 fighters and obtained 52 aerial victories