If you’re a science enthusiast or a fan of science fiction, you might have heard of the Hermes spacecraft in the movie “The Martian.” The Hermes was the spacecraft that carried the Ares III crew to and from Mars, and its size played a crucial role in the story. But just how big is the Hermes?
Overview
The Hermes spacecraft was an interplanetary vessel designed by NASA to transport humans to Mars and back. It consists of several components, including the command module, habitat modules, propulsion system, and docking port. The total length of the Hermes is approximately 60 meters (197 feet), making it one of the largest spacecraft ever built.
Command Module
The command module is where the crew controls and navigates the spacecraft during its journey. It also serves as a hub for communication with Earth. The command module on the Hermes is approximately 14 meters (45 feet) in length and 6 meters (20 feet) in diameter.
Habitat Modules
The habitat modules are where the crew lives during their journey to Mars. There are three habitat modules on the Hermes, each approximately 14 meters (45 feet) in length and 4 meters (13 feet) in diameter. These modules are connected to each other by tunnels that allow for easy movement between them.
Propulsion System
To travel from Earth to Mars and back, the Hermes needed a powerful propulsion system. The spacecraft uses ion engines for thrust, which are much more efficient than traditional chemical rockets. The ion engines are located at the rear of the spacecraft and provide a total thrust of approximately 2N (450 pounds).
Docking Port
The docking port on the Hermes is located at its front end and allows for connections with other spacecraft or space stations. It’s designed to be compatible with the International Docking System Standard, which is used by many spacecraft and space stations around the world.
Conclusion
The Hermes spacecraft in “The Martian” was a fictional creation, but it was based on real-life scientific principles and concepts. Its size and design were carefully crafted to be both visually impressive and scientifically accurate. The Hermes may not exist in real life, but it serves as a reminder of the incredible possibilities that await us in space exploration.