JMC Traveller was a magazine catered to astros and produced by the Jupiter Mining Corporation.
Three million years later, in the sleeping quarters aboard Red Dwarf, Dave Lister was reading a copy of the magazine. It made him miss the human race and fall into depression, which agitated Kryten. ("Dear Dave", Series X)
Lister was reading another JMC magazine, drinking Leopard Lager and listening to Rastabilly Skank when he was chloroformed by his future self. ("Give & Take")
Lister reading the magazine before being knocked out by his future self ("Give & Take", Series XI)