A 1980s Superboy story has him go back in time (from 1966 to 1962) to see a Mercury space launch. The story's also a floating-timeline update on the 60s "Superman meets JFK" stories; Superboy's past self saved the launch (at JFK's request) from Soviet saboteurs.

#space #comics #Superman #Superboy

The next issue's cover (per the JFK reference):
@dtgeek Being able to just pass through time under his own power is pretty amazing; no wonder the post-Crisis Superman was astonished by the pocket universe Superboy being able to do it.
@timrichards yes, Superboy/Superman could do that pre-Crisis; how he was able to be an active member of the Legion of Super-Heroes. Also a Superman/Flash race involved the two racing through time...