Above is from the October 1973 issue of Analog Science Fiction/Fact, one of the first pulps I bought when I was in high-school. This is from an article written by G. Harry Stein.
This is from the January 1975 issue. The main feature is Niven’s ‘Borderland of Sol’, but the cover is misleading. It does represent Niven’s ‘Known Space Universe’ though, it’s the planet Jinx in orbit around its’ primary Barnard’s Star.
This is from October 1974. Velikovsky’s ideas were very controvertial during the 1970s, back in those days, Analog was cutting edge theory-wise.