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2 results for “train engines”
- The Perpetually Curious! › Canonical › Cosmic ExplorationArticle
🌌 Borrowing the Orbits of Giants: How Gravity Assists Carry Spacecraft into the Deep
From section: 🌍 A Simple Analogy: A Ball and a Moving TrainImagine a train moving along a track at a steady speed. Someone standing beside the track gently throws a ball toward the side of the train. If the train were not moving, the ball would simply bounce back with about the same speed it had when it was thrown.
- The Perpetually Curious! › Canonical › Cosmic ExplorationArticle
🛰️ When Fire Meets Air: How Spacecraft Reenter Earth’s Atmosphere
From section: Frequently Asked Questions+… A controlled return usually begins with a retrograde deorbit burn. The spacecraft briefly fires its engines or thrusters opposite its direction of travel, reducing its orbital speed enough to lower part of its path into denser atmosphere. The maneuver does not slow the spacecraft for landing by itself. …