Hard Sci-Fi recommendations

When Kris Kelvin arrives at the planet Solaris to study the ocean that covers its surface he is forced to confront a painful, hitherto unconscious memory embodied in the physical likeness of a long-dead lover. Others suffer from the same affliction and...

A 1959 classic 'hard' science-fiction novel by renowned Cambridge astronomer and cosmologist Fred Hoyle. Tracks the progress of a giant black cloud that comes towards Earth and sits in front of the sun, causing widespread panic and death. A select group...

So when civilization needs someone to run generating stations three kilometres below the surface of the Pacific, it seeks out a special sort of person for its Rifters program. It recruits those whose histories have pre-adapted them to dangerous...