On June 27, 2019, Exploration Ground Systems’ mobile launcher, atop crawler-transporter 2, makes its last solo trek to Kennedy Space Center’s Launch Complex 39B in Florida, where it will remain for the summer, undergoing final testing and checkouts. The mobile launcher departed from the Vehicle Assembly Building at midnight on June 27 for the 10-hour journey to the pad. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

Exploration Ground Systems’ mobile launcher departs from Kennedy Space Center’s Vehicle Assembly Building (VAB) on June 27, 2019, for its final solo trek to Launch Complex 39B in Florida. The mobile launcher departed from the VAB at midnight for the 10-hour journey to the pad, where it will remain for the summer, undergoing final testing and checkouts. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

Exploration Ground Systems’ mobile launcher is seen atop crawler-transporter 2 at Kennedy Space Center’s Launch Complex 39B in Florida on June 27, 2019. The mobile launcher departed from the Vehicle Assembly Building at midnight on June 27 for its last solo trek to the pad, where it will remain for the summer, undergoing final testing and checkouts. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

Exploration Ground Systems’ mobile launcher makes its last solo trek along the crawlerway atop crawler-transporter 2 to Kennedy Space Center’s Launch Complex 39B in Florida on June 27, 2019. The mobile launcher departed from the Vehicle Assembly Building at midnight on June 27 for the 10-hour journey to the pad and will remain there for the summer, undergoing final testing and checkouts. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

With a sunrise serving as the backdrop, Exploration Ground Systems' mobile launcher makes its last solo trek to Kennedy Space Center’s Launch Complex 39B in Florida on June 27, 2019. It will remain there for the summer, undergoing final testing and checkouts. The mobile launcher departed from the Vehicle Assembly Building at midnight on June 27 for the 10-hour journey to the pad. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

NASA’s Kennedy Space Center crawler team is photographed in front of the agency’s mobile launcher at Launch Complex 39B in Florida on June 27, 2019. After departing from the Vehicle Assembly Building at midnight on June 27, the mobile launcher made its final solo trek to the pad, where it will remain for the summer, undergoing final testing and checkouts. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

Exploration Ground Systems’ mobile launcher makes its last solo trek along the crawlerway atop crawler-transporter 2 to Kennedy Space Center’s Launch Complex 39B in Florida on June 27, 2019. The mobile launcher departed from the Vehicle Assembly Building at midnight on June 27 for the 10-hour journey to the pad and will remain there for the summer, undergoing final testing and checkouts. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

Exploration Ground Systems’ mobile launcher is illuminated in the night as it makes its last solo trek to Kennedy Space Center’s Launch Complex 39B in Florida on June 27, 2019. The mobile launcher departed from the Vehicle Assembly Building at midnight on June 27 for the 10-hour journey to the pad, where it will remain for the summer, undergoing final testing and checkouts. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

With the nighttime sky serving as the backdrop, Exploration Ground Systems’ mobile launcher makes its last solo trek to Kennedy Space Center’s Launch Complex 39B in Florida on June 27, 2019. The mobile launcher departed from the Vehicle Assembly Building at midnight on June 27 for the 10-hour journey to the pad and will remain there for the summer, undergoing final testing and checkouts. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

In this view, Exploration Ground Systems’ mobile launcher’s crew access arm (CAA) can be seen. The CAA will interface with the agency’s Space Launch System (SLS) rocket at the Orion crew hatch, providing entry and exit from the Orion crew module. The first crewed flight aboard Orion will be Artemis 2, after the uncrewed Artemis 1 launch verifies SLS and Orion as an integrated system.

On June 27, 2019, Exploration Ground Systems’ mobile launcher, atop crawler-transporter 2, approaches Kennedy Space Center’s Launch Complex 39B in Florida, where it will remain for the summer, undergoing final testing and checkouts. The mobile launcher departed from the Vehicle Assembly Building at midnight on June 27 for the 10-hour journey to the pad. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

With a sunrise serving as the backdrop, Exploration Ground Systems’ mobile launcher makes its last solo trek to Kennedy Space Center’s Launch Complex 39B in Florida on June 27, 2019. It will remain there for the summer, undergoing final testing and checkouts. The mobile launcher departed from the Vehicle Assembly Building at midnight on June 27 for the 10-hour journey to the pad. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

Exploration Ground Systems’ mobile launcher departs from Kennedy Space Center’s Vehicle Assembly Building at midnight on June 27, 2019, for its final solo trek to Launch Complex 39B in Florida. After the 10-hour journey to the pad, the mobile launcher will remain there for the summer, undergoing final testing and checkouts. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

With the Moon and nighttime sky serving as the backdrop, Exploration Ground Systems’ mobile launcher is illuminated in the night as it makes its last solo trek to Kennedy Space Center’s Launch Complex 39B in Florida on June 27, 2019. The mobile launcher departed from the Vehicle Assembly Building at midnight on June 27 for the 10-hour journey to the pad, where it will remain for the summer, undergoing final testing and checkouts. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

Exploration Ground Systems’ mobile launcher is illuminated in the night as it makes its last solo trek to Kennedy Space Center’s Launch Complex 39B in Florida on June 27, 2019. The mobile launcher departed from the Vehicle Assembly Building at midnight on June 27 for the 10-hour journey to the pad, where it will remain for the summer, undergoing final testing and checkouts. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.

Exploration Ground Systems’ mobile launcher makes its last solo trek along the crawlerway atop crawler-transporter 2 to Kennedy Space Center’s Launch Complex 39B in Florida on June 27, 2019. The mobile launcher departed from the Vehicle Assembly Building at midnight on June 27 for the 10-hour journey to the pad, where it will remain for the summer, undergoing final testing and checkouts. Its next roll to the pad will be with the agency’s Space Launch System rocket and Orion spacecraft in preparation for the launch of Artemis 1.