My favorite was the novella "The Sands of Titan" by Richard A. Lovett, a story about a man trying to save himself after he evacuates his ship and ends up on Titan. I thought the best aspect was the character of his embedded AI, which had the personality of a teenage girl. This created a parent-child, teacher-mentor aspect to their interaction that I really enjoyed. An outside candidate for a Hugo nomination.
Lovett also wrote a great "Science Fact" article about various asteroids and their characteristics. Great information, well-written, and with tons of idea germs that could help spark or flesh out stories.