[Oztrich Boy]

I read Niven/Pournelle's Lucifer's Hammer. Great book. Have they written anything since?

Quite a lot, just from my library

Inferno
Footfall
Oath of Fealty
The Mote in God's Eye and The Gripping Hand (aka the Moat around Murchinson's Eye) - from whence the Alderson points

[altair]

from whence the Alderson points

Dan Alderson is a scientist at JPL, by the way.