Skip content
On sale
Noumenon Ultra by Marina J. Lostetter
  Send as gift   Add to Wish List

Almost ready!

In order to save audiobooks to your Wish List you must be signed in to your account.

      Log in       Create account
Phone showing make the switch message

Limited-time offer

Get two free audiobooks when you make the switch!

Now’s a great time to shop indie. When you start a new membership supporting local bookstores with promo code SWITCH, we’ll give you two bonus audiobook credits at sign-up.

Make the switch
Libro.fm app with gift bow

Gift audiobook credit bundles

You pick the number of credits, your recipient picks the audiobooks, and your local bookstore is supported by your purchase.

Start gifting

Noumenon Ultra

A Novel

$7.99

Retail price: $40.94

Sale price: $7.99

Discount: 80%

Narrator Celeste Ciulla

This audiobook uses AI narration.

We’re taking steps to make sure AI narration is transparent.

Learn more
Length 19 hours 21 minutes
Language English
  Send as gift   Add to Wish List

Almost ready!

In order to save audiobooks to your Wish List you must be signed in to your account.

      Log in       Create account

“Lostetter remains at the forefront of innovation in hard science fiction.”—Publishers Weekly (starred review)

The mind-expanding journey that began with Noumenon and Noumenon Infinity continues in this wondrous mosaic tale of deep space exploration, adventure, and humanity that blends the awe, science, and speculative imagination of Arthur C. Clarke, Neal Stephenson, and Octavia Butler.

Deep in the heart of an alien mountain range, I.C.C. has lain dormant, its ships silent, for eons. Now, after one hundred thousand years, the AI is awakening. Someone is roaming the convoy's halls—someone that isn't human.

This planet, Noumenon—created by the megastructure known as the Web—is too young and brutal to have evolved intelligent life. Its surface is bombarded by unusual meteors. Crystal trees abruptly and violently arise from its bedrock. Its solar system is surrounded by a frightening space-time anomaly. So where did these visitors come from? What do they want? And do the people of Earth, whose ancestors launched Convoy Seven, know they are here? 

I.C.C. reaches out to the descendants of its convoy crew to help decipher this primordial riddle. Noumenon was created and seeded by ancient aliens, and clearly their plans for it are unfinished. Together, the AI, the new lifeforms who have awakened it, and the humans will embark on an epic adventure of discovery billions of years in the making. 


Marina J. Lostetter’s original short fiction has appeared in Lightspeed’s Women Destroy Science Fiction! and InterGalactic Medicine Show, among other publications. Originally from Oregon, she now lives in Arkansas with her husband, Alex. Marina enjoys globe-trotting, board games, and all things art-related.

Phone showing make the switch message

Limited-time offer

Get two free audiobooks when you make the switch!

Now’s a great time to shop indie. When you start a new membership supporting local bookstores with promo code SWITCH, we’ll give you two bonus audiobook credits at sign-up.

Make the switch
Libro.fm app with gift bow

Gift audiobook credit bundles

You pick the number of credits, your recipient picks the audiobooks, and your local bookstore is supported by your purchase.

Start gifting