Final answer:
Mike Bossy scored 53 goals during his rookie NHL season in 1977-1978, which was an outstanding achievement that helped him win the Calder Memorial Trophy.
Step-by-step explanation:
The NHL rookie who scored the most goals in a rookie season after Teemu Selanne's impressive 76 goals is Mike Bossy. Mike Bossy set a record for scoring goals as a rookie before Teemu Selanne broke it. As a rookie, Mike Bossy scored a remarkable 53 goals during the 1977-1978 season, an extraordinary feat for a first-year player in the National Hockey League (NHL). This achievement helped Bossy to secure the Calder Memorial Trophy for the NHL's Rookie of the Year.