The Iron Man Launch

Lore & Background

The Iron Man Launch earned its nickname from the drastic modifications made to the MAV, which was originally designed for a fully fueled, crewed ascent. With Watney's survival relying on a lightweight, minimalistic craft, NASA engineers and the Hermes crew worked together to remove all non-essential components—seats, panels, even the guidance computer—to reduce mass. The MAV was essentially a metal shell with an engine, controlled remotely from Earth and the Hermes, making it a 'tin can' of a ship. This launch was the culmination of a series of daring maneuvers, including the 'slingshot' trajectory adjustment by the Hermes crew, which required precise timing and coordination across millions of miles.

Reader's Guide

The Iron Man Launch is the climax of the rescue arc. After Watney's survival through farming, the Pathfinder retrieval, and the long journey to the Ares 4 site, NASA realizes the MAV is too heavy for his solo escape. They devise a plan to lighten it by removing all non-essential parts, controlled remotely. The Hermes crew, led by Commander Lewis, performs a risky gravity assist around Earth to intercept Watney's trajectory. On Mars, Watney preps the MAV, then launches in the stripped-down craft. The ascent is rough, but he achieves orbit and rendezvouses with the Hermes, where a spacewalk brings him aboard.

Did You Know?

• The 'Iron Man' nickname was a fan-coined term, referencing the stripped-down, minimal nature of the MAV, like a 'tin can' in space.
• The MAV's modifications included removing its guidance system, forcing the craft to be controlled entirely from Earth and the Hermes during ascent.