NASA’s Lunar Comeback: Everything You Need to Know 

The SLS core stage for Artemis II enters the VAB. Image by Richard P Gallagher
The SLS core stage for Artemis II enters the VAB. Image by Richard P Gallagher

NASA’s Artemis II mission is progressing steadily with the recent arrival of the Space Launch System (SLS) core stage to the Kennedy Space Center. This event marks the beginning of months of assembly and testing of SLS before its roll out to LC-39B sometime next year.   

Artemis II: Preparing for the Next Giant Leap 

Artemis II is set to be the first crewed mission of NASA’s Artemis program, aiming to orbit the Moon and return safely to Earth. Here are specific facts about Artemis II: 

  • NASA’s Artemis program, named after the Greek goddess of the moon and the hunt and continues the legacy of the Apollo missions. 
  • First Crewed Mission: Artemis II will be the first mission since Apollo 17 in 1972 to carry astronauts beyond low Earth orbit. 
  • Crew of Four: The mission will have four astronauts onboard, including the first woman and the next man on the Moon. 
  • Testing Orion: The mission will test the Orion spacecraft’s life support systems, communication, and navigation capabilities. 
  • Lunar Orbit: Artemis II will follow a hybrid lunar orbit, combining free return and distant retrograde orbit phases. 
  • Mission Duration: The mission is expected to last around 10 days. 
  • Deep Space Gateway: Artemis II will lay the groundwork for the Lunar Gateway, a space station in lunar orbit. 
  • International Collaboration: The mission involves significant contributions from international partners, including ESA, JAXA, and CSA. 
  • Scientific Research: Artemis II will carry out important scientific experiments in deep space. 
  • Radiation Testing: The mission will provide valuable data on radiation exposure for future long-duration missions. 
  • Launch Date: The mission is slated for launch NET September 2025, with rigorous testing ongoing. 

NASA Administrator Bill Nelson emphasized, “Artemis II is not just a mission; it’s a testament to human ingenuity and our relentless pursuit to explore the unknown.” 

SLS Graphic. Credit NASA
SLS Graphic. Credit NASA

SLS Core Stage: The Heart of the Artemis II Mission 

The core stage of the SLS rocket is a marvel of engineering and a crucial component for the Artemis II mission. Here are specific facts about the SLS core stage: 

  • Height and Diameter: The core stage stands 212 feet tall and is 27.6 feet in diameter. 
  • Propellant Capacity: It holds approximately 537,000 gallons of liquid hydrogen and 196,000 gallons of liquid oxygen. 
  • RS-25 Engines: The core stage is powered by four RS-25 engines, previously used on the Space Shuttle. 
  • Thrust: It produces 8.8 million pounds of thrust, more than the Saturn V rockets. 
  • Manufacturing Site: The core stage was constructed at NASA’s Michoud Assembly Facility in New Orleans. 
  • Materials: Made of aluminum-lithium alloy for lightweight strength. 
  • Integrated Avionics: The core stage features advanced avionics for navigation and control. 
  • Testing: Underwent rigorous testing at Stennis Space Center before transportation to KSC. 
  • Transportation: Delivered to KSC via NASA’s Pegasus barge. 
  • Fueling: Designed to fuel the entire rocket stack during launch. 

John Honeycutt, SLS Program Manager, stated, “The SLS core stage is a powerhouse of technology, designed to propel humanity into deep space.” 

The massive core stage with its four RS-25 rocket engines pass in front of the VAB. Image by Richard P Gallagher
The massive core stage with its four RS-25 rocket engines pass in front of the VAB. Image by Richard P Gallagher

The Vehicle Assembly Building: An Icon of Space Exploration 

The Vehicle Assembly Building (VAB) at KSC is an iconic structure, integral to America’s space exploration efforts. Here are ten specific facts about the VAB: 

  • Construction: Completed in 1966 to support the Apollo program. 
  • Size: Largest single floor building by volume, covering eight acres. 
  • Height: Stands 525 feet tall. 
  • Capacity: Can house four Saturn V rockets simultaneously. 
  • Use: Initially built for Apollo, later adapted for the Space Shuttle program. 
  • Renovations: Underwent significant upgrades for the Artemis program. 
  • Interior: Features massive doors, each 456 feet high, to accommodate rocket assembly. 
  • Crane System: Equipped with heavy-lift cranes for vertical assembly of rockets. 
  • Environmental Control: Sophisticated systems to manage humidity and temperature. 
  • Historical Significance: Witnessed the assembly of rockets for Apollo, Shuttle, and now Artemis missions. 
Successful launch of the first SLS Artemis l on November 16, 2022. Image by Richard P Gallagher
Successful launch of the first SLS Artemis l on November 16, 2022. Image by Richard P Gallagher/FMN

The convergence of the Artemis II mission, the SLS core stage, and the iconic VAB symbolizes a new era in space exploration. As NASA prepares to launch humans beyond low Earth orbit for the first time in over 50 years, the world watches in anticipation. These advancements not only honor the legacy of past missions but also pave the way for future endeavors, bringing humanity closer to becoming a multi-planetary species. 

Author

  • Richard P Gallagher, residing in Merritt Island, Florida, boasts a multifaceted background that enriches his role as a photographer. His eight years of service in the Army, including combat deployments and hurricane response missions, instilled discipline and adaptability. Equipped with a Digital Photography certificate from Eastern Florida State College and a Bachelor's degree from Akron University, Richard has a strong educational foundation. As an active member of the Professional Photographers of America, he's dedicated to continuous improvement through workshops and conferences. Richard's talent shines in capturing the drama of rocket launches.

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