'NASA wants to be back on the moon in a sustainable way': Space expert Olivier Sanguy • FRANCE 24

Key Concepts

• Orion Spacecraft: NASA’s crewed spacecraft designed for deep space exploration, featuring a European Service Module.
• SLS (Space Launch System): The heavy-lift rocket used to launch the Orion spacecraft.
• Trans-Lunar Injection (TLI): The propulsion maneuver used to set a spacecraft on a trajectory toward the Moon.
• Free Return Trajectory: A flight path that uses the Moon's gravity to naturally swing the spacecraft back toward Earth, ensuring safety in case of engine failure.
• Magnetosphere: Earth’s magnetic field, which provides natural shielding against solar radiation.
• Sustainability in Space: The shift from expendable hardware (Apollo era) to reusable lunar landers and infrastructure to reduce long-term costs.

1. Mission Overview and Objectives

NASA has launched a crewed mission to orbit the Moon, marking the first such flight in over 50 years. This mission serves as a critical test flight for the Orion spacecraft.

• Primary Goal: To validate that the Orion capsule and its European Service Module can safely support four astronauts for a 10-day duration in the harsh lunar environment.
• Safety Rehearsals: The crew is conducting tests on radiation shielding procedures, specifically identifying areas within the capsule that offer protection from solar storms, as they will be outside the protection of Earth’s magnetosphere.
• Proximity Maneuvers: The crew performed a rendezvous rehearsal with the second stage of the SLS rocket, simulating the maneuvers required for future docking with a lunar lander.

2. Technical Challenges and Solutions

• System Anomalies: Minor technical issues, such as toilet malfunctions, were reported and resolved. The expert noted that while such issues are inconvenient, they are expected during a test flight.
• Communication: Transmission issues were noted as normal for this stage of the mission.
• Radiation Protection: Because the mission leaves the Earth's magnetic shield, the spacecraft is designed with specific zones to protect the crew from solar radiation.

3. Evolution from Apollo to Modern Exploration

The expert, Olivia Songi, highlighted the shift in philosophy between the Apollo era and current NASA objectives:

• Sustainability: Unlike the Apollo program, which utilized expendable lunar landers, NASA is prioritizing reusable technology to lower costs.
• Long-term Vision: The ultimate goal is to establish a lunar base by 2032. This base is compared to research stations in Antarctica, serving as a hub for scientific study and a "stepping stone" for future missions to Mars.
• Resource Utilization: Future plans may involve extracting fuel from lunar resources to support long-term operations.

4. Geopolitical and Scientific Motivations

• Scientific Value: Studying the Moon provides insights into the history of the Earth, as the Moon was formed from a collision with Earth over four billion years ago.
• Geopolitics: There is a perceived "space race" with China. While China has not explicitly stated a goal to beat the U.S. to the Moon, American political rhetoric frames the mission as a matter of "space dominance" and maintaining superpower status.
• Technological Spinoffs: Space exploration forces innovation in harsh environments, leading to advancements that benefit daily life on Earth (e.g., satellite technology for GPS).

5. Economic Perspective

Addressing concerns regarding the cost of space exploration, the expert noted:

• Budget Allocation: NASA’s annual budget of approximately $20 billion represents only 0.6% of the total U.S. federal budget, a figure often overlooked by critics who view the program as purely a PR exercise.

6. Synthesis and Conclusion

The current mission is a foundational step in returning humans to the Moon, transitioning from the "flags and footprints" approach of the 1960s to a sustainable, long-term presence. By testing the Orion spacecraft's capabilities, rehearsing safety protocols, and focusing on reusable infrastructure, NASA aims to establish a permanent lunar base. While geopolitical competition with China acts as a catalyst for funding and urgency, the mission’s primary value lies in the technological advancements and scientific knowledge gained, which are essential for the eventual goal of human exploration of Mars.