Hur stannar stjärnorna i slaget?

Wiki spekulerar på att stjärnorna hålls på plats magnetiskt.

Jag tror inte att det någonsin specifikt anges, men jag tror att stjärnorna troligtvis hålls på plats med samma teknik som gör det möjligt för kommandörens krokar att fungera.

I filmen visas Graff genom att använda sin Hook för att flytta eleverna, vilket leder dem från olika fritt flytande positioner inom nollgränsenområdet, till en bildning som svävar framför honom.

Det är inte mycket av en sträcka att föreställa sig mer kraftfulla versioner som används för att placera stjärnorna och sedan hålla dem på plats under en kamp.

I texten anges specifikt att Ender har utarbetat att flottan har förmåga att kontrollera tyngdkraften. Graff säger senare att denna teknik var omvänd konstruerad från buggarna.

[Eros] was the treasure trove. If they had known we would win that first war, they probably' would never have built this place. We learned gravity manipulation because they enhanced the gravity here.

Hook , Stjärnor och även kamparenan kunde inte fungera utan denna teknik.

I enlighet med den neo-fascistiska regeringen som avbildas i boken har tyngdförsvarets hemlighet (och även det faktum att det är möjligt) hållits hemligt från den allmänna befolkningen.

They never tell you any more truth than they have to. But any kid with brains knows that there've been some changes in science since the days of old Mazer Rackham and the Victorious Fleet. Obviously we can now control gravity. Turn it on and off, change the direction, maybe reflect it-- I've thought of lots of neat things you could do with gravity weapons and gravity drives on starships. And think how starships could move near planets. Maybe tear big chunks out of them by reflecting the planet's own gravity back on itself, only from another direction, and focused down to a smaller point. But they say nothing.”

Lokala volymetriska modifieringar av de elektroniskt genererade tyngdfälten

Den halvkanoniska tekniken i Ender's Game: Några tankar om hur slaget skolan och slaget rummet kan fungera av Stephen Sywak går i detalj om hur stjärnorna stannade i position.

Även om det här arbetet inte skrevs av Card, "informerade det sitt tänkande när han arbetade med skuggböckerna och Ender in Exile".

The “Stars” were first developed with these land-based systems. The early models were approximately 1/4m to 1m per side, and were built in various geometric shapes such as spheres, tetrahedra, etc. As the realization that the best way to utilize the Battle Rooms grew from hand-to-hand training to the larger planetary and deepspace theaters, the Stars changed from their original, “personal” sized units to the large, gravity-suspended, padded cubes currently used. The majority of the Stars are approximately 3m on a side, and all possess recessed handholds on all six of their faces. These handholds allow soldiers to hold on to, push off from, and reorient themselves as they pass by or lock onto a Star.

The Stars are held in position by local volumetric modifications to the electronically generated gravity fields. Because the positions of the Stars are maintained by these pseudogravitational forces (as opposed to rigid structural connections), the force of a student/soldier landing on or bouncing off a Star—if unopposed—could cause it to change position within the Battle Room. Radiolinked position sensors within the Stars report their positions back to the room control computers fifty times/second, and the projected gravity field adjusts itself though servo-control electronics to maintain each Star’s position and orientation to within a highly accurate 5 millimeters (<0.1°). The Star’s large mass (nominally 500 to 1,000 kilograms) allows sufficient resistive forces to be generated by the electro-synthetic gravity to keep the Stars in position against the impact loads of multiple students.

Stars are stored within the walls of the Battle Rooms. Large padded panels unlock and swing into the Battle Room to provide access to sizeable storage regions behind.

The Authorized Ender Companion - The Technology of Ender's Game