A second for Watt's
BLINDSIGHT and Gilliland's
'Rosinante' series.
Hogan's
INHERIT THE STARS and
THE TWO FACES OF TOMORROW
yet to be mentioned:
Michael McCollum's
PROCYON'S PROMISE (the second in the series, but I didn't like the first one that much. His
Antares series is great hard SF, but mostly about space combat)
Charles Sheffield's
Between the Strokes of Night and
The Web Between the Worlds