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Secret of the Ninth Planet (Version 2) audiobook cover

Secret of the Ninth Planet (Version 2)Golden Age Solar System Road Trip

by Donald A. Wollheim🎤Narrated by Tom Weiss
🟠 Borrow Stream
✍️ 3.0 Editorial
🎤 3.0 Narration
4h 44m

TL;DR

Golden Age Solar System Road Trip

  • Throughput: Brisk planetary tour structure - each stop gets its moment without overstaying its welcome.
  • Engagement Level: Pure 1950s optimistic space adventure - competent heroes, solvable problems, and jungle Venus.
  • Production Quality: Clean LibriVox recording with steady, clear narration - no audio issues for a volunteer production.
  • Ship/No-Ship: Borrow/Stream

Is this for you?

Pick this if: you love golden age sci-fi and want a short zero-commitment listen · you enjoy optimistic planet-hopping adventure and don't need complex characters · you want a free low-stakes audiobook for commutes or falling asleep
Skip if: you need complex characters or modern scientific accuracy in your sci-fi · you prefer grimdark twists or emotionally deep character development · you mostly listen while distracted and need a gripping plot to stay engaged
📚Best for fans of: Heinlein juveniles (Space Cadet, Have Space Suit—Will Travel), Battlefield Earth by L. Ron Hubbard, Tom Corbett, Space Cadet series
Read Time4 min read
Duration4h 44m
Best Speed:1.5x recommended
Your rating?
Sarah Chen, audiobook curator
Reviewed bySarah Chen

FAANG engineer, 2hr daily commute. Rates books by commute-worthiness.

🎧 Usually listening Friday commutes, wants low-commitment zero-cognitive-load fun, skips anything with heavy commitment required.

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This is basically a 1950s YA novel that somehow predicted the Voyager program, and I'm kind of here for it.

I grabbed this one for a short Friday commute when I didn't want to start anything heavy. At under 5 hours, it's the audiobook equivalent of a single Caltrain round-trip—low commitment, zero cognitive load. And honestly? That's exactly what it delivers.

The Premise Is Bonkers (In a Good Way)

High schooler Burl Denning stumbles onto an alien conspiracy to steal solar radiation from every planet in our solar system, and somehow HE'S the key to stopping it. The setup is pure 1950s pulp—a mysterious device, a secret government mission, and an experimental spacecraft named the Magellan that's going to hop from Mercury to Pluto (yes, Pluto, because this was written when it was still a planet and the ninth one at that).

Wollheim was writing this in 1959, and you can feel it. The science is charmingly wrong in that pre-Space-Age way where authors were basically guessing what Venus might look like under those clouds. Spoiler: they guessed jungle. They always guessed jungle. But here's the thing—some of his orbital mechanics and mission planning concepts actually hold up surprisingly well. The grand tour concept, visiting multiple planets using gravitational assists? NASA wouldn't actually do that for another 20 years with Voyager.

Tom Weiss Does the Heavy Lifting

I went in with zero expectations on the narration since this is a LibriVox recording—volunteer readers, your mileage varies wildly. Weiss keeps it steady and clear, which for a free public domain recording is honestly all you need. He doesn't do wildly distinct character voices, but he keeps the pacing brisk enough that the 4h44m runtime flies by. No audio glitches, no weird room echo, no sudden volume drops. For volunteer work, that's a win.

The prose itself is... functional. Wollheim was an editor first, author second, and it shows. Sentences are short, action is clear, descriptions are efficient. Perfect for half-awake commute listening when your brain is running at maybe 60% capacity.

Where It Shows Its Age

Look, I'm not going to pretend this is high literature. Burl is a pretty flat protagonist—he's competent, brave, and basically a wish-fulfillment vessel for teenage boys in 1959. The female characters are... well, there basically aren't any. The "alien threat" is more of a puzzle to solve than a genuinely terrifying antagonist.

And the pacing is weird by modern standards. We spend a LOT of time on the journey itself—each planetary stop gets its moment, which is cool if you're into solar system tourism, but there's not a ton of character development happening between Mercury and Neptune. It's very much an "and then, and then, and then" plot structure.

But you know what? That's also kind of relaxing. No grimdark twists. No beloved characters dying horribly. Just a kid and a crew trying to save Earth, one planet at a time.

Who's This Actually For?

If you grew up on Heinlein juveniles or have a soft spot for golden age SF, this scratches that itch. Battlefield Earth gave me that same golden age competence-fantasy vibe, though with significantly higher production values. It's also genuinely free (LibriVox, bless them), so the ROI is literally infinite. I'd recommend it for:

  • Short commutes when you don't want to start a 40-hour epic
  • Falling asleep (the steady narration won't jolt you awake)
  • Anyone curious about what SF looked like before we actually went to space

Skip it if you need complex characters, modern science accuracy, or any kind of romantic subplot. This is a competence fantasy wrapped in a solar system tour, nothing more.

Three Commutes, Job Done

I finished this in exactly 3 commutes, and it did its job. Not every audiobook needs to change your life. Sometimes you just need something to fill the space between Millbrae and Mountain View that won't require you to rewind because you zoned out during a crucial plot point. This is that book.

Plus, it's free. And at 1.5x speed, you're looking at just over 3 hours. That's basically the runtime of a long movie. For golden age planet-hopping adventure with zero financial commitment? Worth the bandwidth.

Technical Specs ⚙️

Audio production quality notes that may affect your listening experience

🎙️

Read by a single narrator throughout the entire audiobook.

☀️

Easy, casual listening perfect for relaxation.

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