Artemis II is NASA's first crewed mission to orbit the Moon since Apollo, marking a significant step in returning humans to lunar exploration. The mission will test systems for future lunar landings and establish a sustainable presence on the Moon.
The Artemis II mission launched to orbit the moon, similar to Apollo 8's preparatory mission in 1968. Like Apollo 13, it will swing around the moon rather than entering lunar orbit.
The Artemis I mission lasted 25 days, much longer than the upcoming Artemis II's 10 days, allowing it to take an unusual orbital path. The unmanned nature of Artemis I enabled this extended duration and more complex trajectory.
The term "perilune" refers to the point in a spacecraft's orbit when it is closest to the moon. This term is sometimes called "periselene," with both terms having different linguistic origins.
The latitude of the Great Pyramid of Giza is exactly 29.9792458° N, which matches the speed of light in vacuum: 299,792,458 m/s. This numerical coincidence has been noted in online discussions.