The Six Three Rocketeers

Three Rocketeers - Count 'Em!

1...2...3...

...4...5...6!

Hmm...

This trio got there first, back in 1952 -

But that was all there was.

A half dozen years later, a new Trio claimed the title with a tolerably awesome support trio - Jack Kirby and Al Williamson, with Joe Simon running Mission Control -

Unfortunately, they debuted in the final issue of Race For The Moon. It would be another 7 years before their adventures continued in Blast-Off -

(By the way - you can also find a couple tales from Larry Ivie in Blast-Off #1, illustrated by Al Williamson and Reed Crandall.)

However, Blast-Off lasted only a single issue, so it was another year before we saw them again in Unearthly Spectaculars as Otto Binder tells us how they got together, with Mike Sekowsky on pencils -

Amazingly, at this point, that was not Unearthly Spectacular's final issue. 

They lasted one more...

And so, apparently they parked the ship in the garage and never went speeding again.

page art by Vic for Atom Age Combat #3 and Jack Kirby, Al Williamson, Mike Sekowsky, and Bill Draut for Race For The Moon #3, Blast-Off #1, and Unearthly Spectaculars #s 2 & 3 (1952, 1958, 1965, 1966, 1967)