ORIGINAL SPACEWAR! (1962): RUSSELL · GRAETZ · WIITANEN
STAR DUEL: ⚒ NINTH NIGHT GAMES · 2025 · SPACEWAR! IS PUBLIC DOMAIN
NEEDLE ♥♥♥
STAR DUEL
♥♥♥ WEDGE
☀ STELLAR GRAVITYApproaching the star increases gravitational pull by r².
ROUND OVER
⚒ NINTH NIGHT GAMES — SCIENCE CORNER
☀ STELLAR GRAVITY
HOW THE SUN SHAPES YOUR BATTLE
NEWTON'S LAW OF UNIVERSAL GRAVITATION
Every mass attracts every other mass. The force is:
F = G × (M × m) / r²
Where G is the gravitational constant, M is the star's mass, m is your ship's mass, and r is the distance between them.
THE INVERSE-SQUARE LAW
Notice the r² in the denominator. If you get twice as close to the star, gravity pulls four times harder. This is why ships near the star accelerate so rapidly — and why skilled pilots use slingshot maneuvers to gain speed!
ORBITAL MECHANICS IN THE GAME
The star exerts real gravitational force on both ships and torpedoes. A torpedo fired at the star will curve away. Skilled pilots use slingshot trajectories — swinging close to gain speed then breaking orbit to attack. NASA uses these same physics for deep-space probes!
ESCAPE VELOCITY
To break free of gravity permanently a ship would need to reach v = √(2GM/r). In Star Duel ships wrap around the screen edge, but in real space you'd need to sustain that speed to escape the star's grip forever.