This may be a bit of an odd request, but I find that some of my favorite novels come from a feeling of isolation or imminent danger, whether it's out in space or deep underground. Basically... a character or group that is lost in unfamiliar territory far from home.
Some examples of what I'm looking for:
The Terror by Dan Simmons - two ships lost in the North Pole being chased by a giant polar bear... cooler than it sounds
Deepsix by Jack McDevitt - crew stranded on an island and having to deal with local flora and fauna while trying to get back to a ship
The Dark Beyond the Stars - the crew of a generational ship about to head into a great starless expanse
Deeper by Jeff Long - characters making a descent into Hell... literally
Some examples of what I'm looking for:
The Terror by Dan Simmons - two ships lost in the North Pole being chased by a giant polar bear... cooler than it sounds
Deepsix by Jack McDevitt - crew stranded on an island and having to deal with local flora and fauna while trying to get back to a ship
The Dark Beyond the Stars - the crew of a generational ship about to head into a great starless expanse
Deeper by Jeff Long - characters making a descent into Hell... literally