# Why the US is Struggling to Land on the Moon

Channel: Real Engineering
Source: https://www.youtube.com/watch?v=IC32zBGdJok
Recap page: https://rapidrecap.app/video/IC32zBGdJok
Generated: 2025-07-16T20:17:51.415+00:00

---
## Quick Overview

The US is struggling to land on the Moon due to the inherent difficulties of lunar descent, recent private mission failures, and the high cost of human-crewed missions. Current efforts focus on developing autonomous landing technologies and establishing a robust communication and navigation infrastructure around the Moon through commercial partnerships, aiming to make future human missions safer and more reliable.

**Key Points:**
- Two recent US private lunar landing attempts failed in early 2024, with Astrobotic's Peregrine Lander experiencing a propellant leak and Intuitive Machines' Nova-C lander tipping over on impact.
- The Nova-C lander's visual guidance system failed to navigate around a rock, causing a landing leg to break and the lander to tip onto its side.
- NASA's Commercial Lunar Payload Services (CLPS) initiative funds private companies to develop lunar landing technologies, with each mission receiving around $100 million.
- Modern lunar missions are uncrewed due to the high cost of sending humans, with payloads costing approximately $1 million per kilogram to reach the Moon.
- Autonomous navigation systems rely on detailed 3D maps of the Moon from the Lunar Reconnaissance Orbiter, but can be impaired by dust plumes at low altitudes.
- Lander design is crucial for stability; Firefly's Blue Ghost lander uses a lower center of gravity with side-by-side propellant tanks, unlike Intuitive Machines' taller, stacked design.
- China has a strategic advantage with lunar relay satellites providing continuous communication and navigation for far-side missions, a capability the US and Europe currently lack.

![Screenshot at 0:17: An animated lunar lander rests on its side on the Moon's surface, having tipped over during landing.](https://ss.rapidrecap.app/screens/IC32zBGdJok/00-00-17.png)

**Context:** Landing on the Moon is an incredibly complex endeavor, as recent private American lunar landing attempts have demonstrated. Since the Apollo 17 mission in 1972, the United States has not successfully landed a spacecraft on the Moon until recently, with two private missions failing in early 2024. These missions are part of NASA's Commercial Lunar Payload Services (CLPS) initiative, which aims to develop technologies and infrastructure for future human missions to the Moon, such as the Artemis program. The challenges range from precise navigation in an unforgiving environment to managing the complex physics of spacecraft descent and ensuring reliable communication over vast distances.

## Detailed Analysis

Landing on the Moon remains a significant challenge, as evidenced by two recent US private lunar landing attempts failing in early 2024. Astrobotic's Peregrine Lander experienced a propellant leak, preventing it from reaching the Moon, while Intuitive Machines' Nova-C lander tipped over upon descent due to its visual guidance system failing to navigate around a rock, breaking a landing leg. These incidents highlight the need for NASA to relearn and develop reliable lunar landing technologies, especially for autonomous systems, as sending human crews on early exploratory missions is financially prohibitive, costing around $1 million per kilogram of payload. Historically, Apollo 11 faced communication issues requiring manual antenna adjustments, and Neil Armstrong had to manually correct his landing path due to unexpected terrain. Modern missions benefit from detailed 3D maps of the Moon created by the Lunar Reconnaissance Orbiter, allowing autonomous visual navigation systems to identify surface features like craters for precise positioning. Firefly Aerospace's upcoming Blue Ghost mission will utilize two cameras for navigation, one for tangential braking and another for vertical descent, tracking along the Moon's terminator line to maximize solar power. However, at very low altitudes, dust plumes from thrusters can obscure camera views, forcing reliance on inertial measurement units. Blue Ghost also incorporates a Simultaneous Localization and Mapping (SLAM) algorithm, similar to those used in autonomous cars, to build real-time maps of unknown terrain. Lander design is critical; Intuitive Machines' tall design with stacked propellant tanks raised its center of gravity, contributing to its tip-over. Blue Ghost, in contrast, uses four side-by-side tanks to lower its center of gravity and employs precision thrust control through duty cycling its engines. Landing confirmation relies on foot sensors, data links, and inertial measurement units, but real-time data from the Moon is limited. China has gained an advantage by deploying lunar relay satellites at Lagrange Point 2, providing continuous communication with the far side of the Moon and enabling complex missions. The US and Europe are working to address this blind spot; Blue Ghost will carry a Lunar Node 1 beacon to test global navigation system signals for lunar positioning, part of NASA's broader LunaNet initiative to build a network of lunar communication and navigation nodes. These commercial missions, despite setbacks, are crucial for developing the technology and infrastructure needed for the Artemis program's future human landings, representing a cost-effective reincarnation of early Apollo-era testing.

### Recent US Lunar Landing Failures

- Astrobotic's Peregrine Lander failed due to a propellant leak
- Intuitive Machines' Nova-C lander tipped over after striking a rock during descent
- These failures underscore the difficulty of lunar landings and the need for advanced technology.

### Historical Challenges and Modern Context

- Apollo 11 faced communication issues requiring manual relay via Michael Collins
- Modern missions lack human pilots for problem-solving and command modules for communication relay
- Sending humans to the Moon is currently too expensive for early exploratory missions under NASA's Commercial Lunar Payload Services (CLPS) initiative.

### Autonomous Navigation and Mapping

- Lunar Reconnaissance Orbiter (LRO) provides high-resolution 3D maps of the Moon's surface
- Firefly's Blue Ghost lander uses two cameras for visual navigation, one for tangential braking and one for vertical descent
- The lander's software uses the Moon's detailed map to identify features and calculate its position and velocity.

### Lander Design and Control

- Blue Ghost utilizes eight hypergolic rocket motors for precision thrust control during descent
- Propellant consumption continuously alters the lander's thrust-to-weight ratio and center of gravity
- Blue Ghost's design places four propellant tanks side-by-side to maintain a lower, more stable center of gravity, unlike Intuitive Machines' taller, stacked tank configuration.

### Communication and Navigation Infrastructure

- China has a significant advantage with its lunar relay satellites at Lagrange Point 2, enabling continuous communication with the Moon's far side
- Blue Ghost will test a Lunar Node 1 beacon to evaluate using Earth-based global navigation system signals for lunar positioning
- NASA plans to build a comprehensive LunaNet system with multiple nodes and satellites to provide robust communication and navigation for future lunar missions.

### Future of Lunar Exploration

- Commercial Lunar Payload Services (CLPS) missions are designed to gradually build up lunar technology and infrastructure
- These missions are critical for making future human landings safer and more reliable under the Artemis program
- Despite initial setbacks, these efforts are seen as a modern, cost-effective reincarnation of the early Apollo program's testing and development phase.

![Screenshot at 0:03: A lunar lander approaches the Moon, with the Moon's cratered surface prominently displayed.](https://ss.rapidrecap.app/screens/IC32zBGdJok/00-00-03.png)
![Screenshot at 0:10: A large white rocket with red accents stands on a launchpad, surrounded by support structures and palm trees.](https://ss.rapidrecap.app/screens/IC32zBGdJok/00-00-10.png)
![Screenshot at 0:17: An animated lunar lander rests on its side on the Moon's surface, having tipped over during landing.](https://ss.rapidrecap.app/screens/IC32zBGdJok/00-00-17.png)
![Screenshot at 0:37: The Intuitive Machines Nova-C lunar lander is shown upright in a hangar, with an American flag in the background.](https://ss.rapidrecap.app/screens/IC32zBGdJok/00-00-37.png)
![Screenshot at 0:59: An animated lunar lander descends towards the Moon's surface, with its engines firing.](https://ss.rapidrecap.app/screens/IC32zBGdJok/00-00-59.png)
![Screenshot at 1:08: Two men, one wearing a Firefly shirt, sit in chairs in a workshop, engaged in conversation.](https://ss.rapidrecap.app/screens/IC32zBGdJok/00-01-08.png)
![Screenshot at 1:42: A black and white view from inside a spacecraft shows the cratered surface of the Moon below.](https://ss.rapidrecap.app/screens/IC32zBGdJok/00-01-42.png)
![Screenshot at 2:30: Several documents titled 'Commercial Lunar Payload Services' and featuring images of lunar landers are spread across a table.](https://ss.rapidrecap.app/screens/IC32zBGdJok/00-02-30.png)
![Screenshot at 3:10: A spacecraft is shown in orbit with the Moon in the background, highlighting the vastness of space.](https://ss.rapidrecap.app/screens/IC32zBGdJok/00-03-10.png)
![Screenshot at 3:40: The large NASA Artemis rocket stands tall on its launchpad, ready for a mission.](https://ss.rapidrecap.app/screens/IC32zBGdJok/00-03-40.png)