The perils of exploring the universe are many and varied...
...as seen in this never-reprinted story from Key Publications' Weird Tales of the Future #6 (1953)!
Though it's implied that one of the guys Rex and Tom shot was Rex's brother, that point is more-or-less ignored!
The writer is unknown, but artist Hy Fleishman signed his work in the first panel.
Fleishman worked for numerous publishers during the 1950s including Atlas (later Marvel), Story, Key, and Lev Gleason in various genres including horror, war, sci-fi, western, romance, and even humor.