ALT Adam Brown, Quality Inspector for L3Harris, examines one of the RS-25 rocket engines that was recently offloaded inside the Vehicle Assembly Building at NASA Kennedy Space Center. He is wearing eye protection and holding a flashlight. Credit: NASA

ALT A view of the RS-25 rocket engine from above. The engine is laying on its side and has the shape of a bell, with a wide opening at the bottom. The top of the bell shape is covered in a cluster of piping. Credit: NASA

ALT Two RS-25 rocket engines are seen in this image — one in the background laying on its side and one right side up in the foreground. They are both inside of a white windowless room. Credit: NASA

ALT Minister of Communications and Innovation David Tshere, right, shakes hands with NASA Deputy Administrator Matt Anderson, left, after signing the Artemis Accords during a ceremony with the Republic of Botswana Thursday, June 25, 2026, at the Mary W. Jackson NASA Headquarters building in Washington. The Republic of Botswana is the 68th country to sign the Artemis Accords, which establish a practical set of principles to guide space exploration cooperation among nations participating in NASA’s Artemis program. Credit: NASA/Keegan Barber

ALT An artist’s concept of sustained human operations at a base near the lunar South Pole. Astronauts, rovers, habitats, and supporting infrastructure are shown on the lunar surface while spacecraft and communications satellites operate overhead. Earth is visible above the horizon. Credit: NASA

ALT Inside a large, arched cargo bay with ribbed metal walls, a wide circular spacecraft structure sits centered on a platform. Crates, equipment, and workstations line the walls, and bright light pours in from the open end of the bay in the background. Several workers stand near the equipment along the sides of the space. Photo credit: NASA/Amber Jean Notvest

ALT NASA astronaut and Artemis II commander Reid Wiseman gazes out the window of the Orion spacecraft upon the start of the sixth day of the mission and a few hours before the lunar flyby. Credit: NASA

ALT NASA astronaut and Artemis II Pilot Victor Glover smiles aboard the Orion spacecraft with a crescent Earth visible through the window behind him on the eighth day of the Artemis II mission. Credit: NASA

ALT NASA astronaut and Artemis II mission specialist Chrsitina Koch on Flight Day 2 ahead of the translunar injection burn that ultimately sent the crew in the Orion spacecraft toward the Moon. Credit: NASA

ALT Canadian Space Agency astronaut Jeremy Hansen inside the Orion spacecraft on the third day of the Artemis II mission. Credit: NASA

ALT Illustrated graphic showing a portion of Earth, with major land masses appearing gold-brown and blue-green. The text "Join Us! Register September 19, 2026" is centered. At upper left, a simple representation of a waxing gibbous Moon with the words “Observe the Moon” is shown inside of a location pin.

ALT The four crew members of Artemis III -- from left to right, Luca Parmitano, Andre Douglas, Randy Bresnik, and Frank Rubio -- grin for the camera as they pose for a photo. They are wearing their orange flight suits against a white background; Luca and Randy are seated on stools, with Andre and Frank standing behind them. Credit: NASA/Helen Arase Vargas

ALT A gray and black locomotive, marked with three stars on its front, pulls a long line of white rail cars along tracks surrounded by gravel. A bright blue sky provides a clear backdrop. Credit: NASA/Cory S. Huston

ALT Taken from a low, ground-level perspective, the image shows gravel and grass in the foreground as a white train car passes overhead. The camera angle looks upward, emphasizing the train's size against a backdrop of gray, overcast clouds. Credit: NASA/Frank Michaux

ALT A train crosses a bridge over calm water, its reflection mirrored below. Lush green vegetation frames the scene, and clear blue skies on a sunny day create a bright, picturesque landscape. Credit: NASA/Brandon Hancock

ALT This photo of the Moon was captured by the Artemis II crew aboard the Orion spacecraft a few hours before the lunar flyby on April 6, 2026. During the flyby, the crew captured critical science observations as they traveled around the far side of the Moon, traveling farther than any humans ever before. The Moon resembles a gray cratered orb in the distance, standing out against the blackness of space. Credit: NASA

ALT The Moon appears half-illuminated in this photo captured by the Artemis II crew on April 6, 2026. The terminator — the difference between light and darkness — provides a stark contrast and even greater perspective of the Moon's rocky, uneven, and otherworldly surface features. The near side of the Moon, which is what we can see from Earth, appears in the dark gray regions at the top of this image. The Moon stands out against the blackness of space around it. Credit: NASA

ALT The Artemis II crew was tasked with capturing many key features visible in this image of the Moon, captured on April 6, 2026. The terminator, or the difference in light and darkness, is visible on the top left. The large dark gray area toward center-left is Orientale Basin, while the characteristic dark patches of ancient lava flow we see on the near side are visible on the right half of this image. The Moon stands out against the blackness of space around it. Credit: NASA

ALT This photo of a crescent Moon and crescent Earth was taken by an Artemis II astronaut during their lunar flyby on April 6, 2026. This image captures one of the final moments before their loss of signal with Earth as the Orion spacecraft flew around the far side of the Moon, reemerging and regaining contact approximately 40 minutes later. Earth can be seen peeking behind the Moon in the distance. The illuminated regions of the Moon and Earth stand out against the blackness of space, while the rest are swallowed in shadow. Credit: NASA

ALT A view of Earth through a spacecraft window, showing the blue-and-white planet partially framed by the dark interior structure, cables, and hardware inside the spacecraft.