Heart of the Comet    by Gregory Benford
Price: $6.99 USD. 173070 words. Language: English. Published on June 5, 2012. Fiction » Science fiction » Hard sci-fi.
By DAVID BRIN and GREGORY BENFORD -- David Brin and Gregory Benford come together again to issue a new edition of their bold collaboration about our near human future in space, planting our boots . . . and staking our destiny . . . on becoming the People of the Comet. Prescient and scientifically accurate, Heart of the Comet is known as one of the great "hard sf" novels of the 1980s.

The War for Profit Series Omnibus    by Gideon Fleisher
Price: $9.99 USD. 314220 words. Language: English. Published on May 2, 2013. Fiction » Science fiction » Military.
The entire series, complete. Military Science Fiction Action-Adventure set two thousand years in the future. The series concentrates on a Heavy Brigade Combat Team, the Jasmine Panzer Brigade. Much of the action involves armored warfare.

The Chaos Chronicles (Books 1-3)    by Jeffrey A. Carver
Price: $6.99 USD. 317530 words. Language: English. Published on December 16, 2010. Fiction » Science fiction » Hard sci-fi.
(3.00 from 3 reviews)
An omnibus of three novels: Neptune Crossing, Strange Attractors, and The Infinite Sea. When John Bandicut encounters alien sentience on Triton, his life changes forever—from sacrificing everything to save Earth, to confronting a malicious entity at the edge of the galaxy, to fathoming the abyss of an alien ocean. A major hard-SF adventure from the Nebula-nominated author of Eternity's End.

Tau Ceti (an Ell Donsaii story #6)    by Laurence Dahners
Price: $3.99 USD. 100460 words. Language: English. Published on December 21, 2012. Fiction » Science fiction » Hard sci-fi.
(4.00 from 1 review)
“Tau Ceti" is the sixth in a series of near future SciFi/Thrillers whose young heroine Ell Donsaii has a nerve mutation which has made her a genius and an athletic phenomenon. In “Tau Ceti”, she is continuing to find uses for the quantum entangled wormholes that she has discovered. These wormholes aren’t big enough to send people through, yet they are making huge changes in our world.

Phase Change (2180)    by B.B. Irvine
Price: $0.99 USD. 146240 words. Language: English. Published on October 2, 2012. Fiction » Science fiction » Hard sci-fi.
Phase Change (2180): New Captain Xiu-Li Chen leaves her starship SAS JAGUAR to discover what happened to the missing crew on board the drifting, empty science ship ROSALIND FRANKLIN. When armed raiders arrive to salvage the hulk, First Officer Commander Ecurba must take JAGUAR into harm’s way to protect his captain. Book 5 in the Spacer Series.

Krone Ascending    by J. Craig Wheeler
Price: $4.99 USD. 121530 words. Language: English. Published on July 1, 2012. Fiction » Science fiction » Hard sci-fi.
Sequel to The Krone Experiment in which physicist Paul Krone manufactured and lost control of four tiny black holes that now orbit through the earth. Krone Ascending is a saga that depicts the efforts to control and eliminate the black holes and manage the wrenching catastrophes released in their wakes.