Planetary shield
Planetary shields, also known as a planetary shield generator, were large Energy shields designed to protect entire planets. These shields were used by the Lizardian Empire to protect important Planets such as Lizard-953-E or P3X-996, and by the First Order to protect their base of operations/superweapon, Nicoll Dyson Beam or entire stars.
Description
Planetary shields were monolithic Energy shields that enveloped entire planets. Designed to protect important installations from attack, planetary shields were impregnable against Open fire and any other cosmic Attack.
The planetary shield that surrounded Lizard-953-E had a fractional refresh rate, preventing any spacecraft traveling slower than lightspeed from transitioning into the planet's atmosphere.