Stellaform

Stellaforming, or Star Molding, is a technology used by the Zeta Reticulans.

Summary
Using extremely strong tractor beams found on Homeships, stars, planets, moons, and even asteroid belts are all moved into position over a process of weeks. While it is unknown how these Celestial Bodies are moved without being torn apart, most scientists theorize that the tractor beams are tuned to a certain frequency, which allows them to be moved without major damage.