New count shows 22 rocket flights needed for Moon trip

The cost of getting humans back to the Moon just got a specific price tag. For the first time, NASA has shared a precise number for the amount of rocket traffic required to support a lunar landing. The new figure is 22. This means 22 separate Starship launches from Earth are needed to fuel the vehicle that will carry astronauts to the lunar surface. This is a significant increase from previous vague estimates that suggested far fewer flights would be necessary.

NASA has kept this number under wraps for years. Agency leaders have treated the count like a state secret. They have rarely given a direct answer when asked. In 2023, Lisa Watson-Morgan, who led the Human Landing System at the time, told reporters that the agency had a general idea but was hesitant to share exact details. She later described the number as being in the high single digits to the low double digits. That range implied about a dozen flights. Other officials have used the term high teens in the past. The hope was that SpaceX would improve the rocket's lift capacity to reduce the number of tanker flights needed.

The timeline of these estimates shows a steady upward trend. Early hopes were for a smaller number, but the reality of fueling a giant rocket in orbit is complex. SpaceX must launch a depot version of the Starship first. Then, it must send multiple tanker versions to load it with liquid oxygen and methane. This process requires many individual launches. The new estimate of 22 reflects the current understanding of how much propellant is needed for the journey to the Moon and back to lunar orbit.

This new number was revealed on Thursday during a quarterly meeting. The NASA Aerospace Safety Advisory Panel held the session to discuss risks associated with the Artemis Program. Charlie Precourt, a former NASA astronaut and panel member, spoke about the challenges of landing humans on the Moon. He highlighted the logistical hurdles involved in the current plan. The presentation provided a clear look at the operational requirements for the mission.

Some NASA officials are concerned about this new figure. They worry that the number of required launches is higher than anticipated. There is a fear that this may not happen soon enough for Starship to play a major role in this decade. The goal is to return humans to the Moon as part of the Artemis initiative. A high number of launches could delay the timeline. It also increases the complexity of coordinating multiple rocket flights in a short period.

The path forward now involves detailed planning. SpaceX will need to execute these 22 launches successfully. Each flight must go without major issues to ensure the depot is fully fueled. The agency is monitoring the progress closely. The next step is to see how quickly these launches can be scheduled. The number is now official, and it sets the baseline for future mission planning. The focus shifts from guessing to executing a large-scale operation.