Advanced Warp Gravitics is a technology on the Exploration and Expansion technology tree with a research cost of 4000 
. It unlocks one Empire Improvement and one Star System Improvement, requires research in Atmospheric Filtration or in Graviton Manipulation, and allows further research in Non-Baryonic Shielding and Soil Revivification.
"The shielding and field technology needed to create the warp 'bubble' around a ship is improved to also stabilize and control gravity locally. Related advances in gravity control technology will be applied to research -- and defense -- installations."
String Gravitics Drive[]
- +4
on Empire
"An improvement on the basic magnetic induction systems, this advanced form of the drive manipulates gravitons to generate the fields that drive the ship along the path of the cosmic string. The resulting engines are both faster and smaller than the relatively clunky magnetic systems."
Deep Space Facility[]
Cost : 1440 
- +250 Defense per colonized Asteroid
- +40 per colonized Asteroid
- -11 on improvement
"Due to the low gravity vacuum that surrounds asteroids, they provide a perfect location for a center of research into the uses and effects of low gravitation. A side effect of this knowledge, of course, is the ability to use the technology and the asteroids themselves to improve system defense."