a video which I highly recommend available at YouTube, talks about his favorite fifteen issues of Astounding. One of these is the February 1950 issue, which contained the first part of what Malzberg considers L. Ron Hubbard's best novel-length work, To The Stars. I got a hold of a 2004 hardcover edition of the novel, and read it yesterday; it's pretty short, like 200 pages in this edition but with large print and wide margins.
To The Stars is about the Einsteinian time dilation effect we see in numerous science fiction books, like Heinlein's 1956 Time for the Stars and Haldeman's 1975 Forever War. If you fly in a space ship at a large fraction of the speed of light, then return to Earth, you will find that while maybe only a year or two has passed for you, on Earth much more time has passed, and maybe your little nephew is now twice your age or your whole society has gone through a political or cultural revolution and you don't fit in.
At the start of To The Stars it is thousands of years in our future, and the solar system has a classbound society. The rich nobility live in skyscrapers and the masses of the poor lack social services and swarm down on the surface. Alan Corday is a young gentleman, highly educated, but his father has fallen into bankruptcy and our hero has no money to marry his girl or start his engineering business. He goes to the slums around the New Chicago spaceport, hoping to get passage to Mars, where he thinks he can get a job with the duke who runs Mars. But he gets shanghaied and impressed into the crew of a ship going to Alpha Centauri and Betelgeuse, one of the long haul ships subject to the Einsteinian time dilation effect. By the time he gets back his girl is going to be an old hag! Only desperate people with nothing to hold them on Earth crew these long haul spaceships, and now upper class Corday is trapped on a ship with a bunch of these lower class clods!
This book is much better than Hubbard's postapocalyptic The Final Blackout; To The Stars is a traditional SF story of guys flying around in a spaceship, solving problems with ingenuity and ray guns, trying to figure out their place in the universe. In some ways it reminds me of those early Heinlein novels in which a young man matures and learns responsibility while having adventures; I guess I'm thinking of Starman Jones and Citizen of the Galaxy, because so much of them takes place on space ships.
Solidly entertaining: fans of classic rocket ship and ray gun adventures should check it out.