The scientific implications are staggering, and the potential for advancing space travel is almost beyond imagination. However, when the four Artemis II astronauts pass over the far side of the Moon tomorrow, it will also mark an intensely personal and transformative journey. They will be the first humans to look directly into the depths of one of the Moon's most enigmatic features.
A Historic View of the Mare Orientale
Appearing like a colossal bullseye, the Mare Orientale, or Eastern Sea, will dominate their view as a vast 200-mile-wide crater. This immense structure was created 3.7 billion years ago by an asteroid colliding with the lunar surface at a speed of nine miles per second. For Commander Reid Wiseman, 50, mission specialists Christina Koch, 47, and Jeremy Hansen, 50, along with pilot Victor Glover, 49, this moment is sure to be life-altering.
During this phase, all communication with mission control will be severed as the Moon blocks signals, leaving the crew in solitude to contemplate the raw power and majesty of space. The asteroid impact that formed this crater was incomprehensibly destructive, with force estimated to be three times greater than the impact believed to have caused the extinction of dinosaurs on Earth.
Unprecedented Visual Access
Surrounding the crater are concentric mountain ranges, formed by debris ejected during the cataclysmic event. While Apollo astronauts glimpsed this area half a century ago, they viewed it from much lower altitudes, between 4,000 and 6,000 miles, and never in direct sunlight. Consequently, the best images captured, such as those by Apollo 17 astronaut Ronald Evans, were limited to dim, black-and-white photographs.
Artemis II will face no such limitations. The Sun will be positioned directly overhead, illuminating the crater in full detail. Although satellites have photographed the Mare Orientale, capturing clear images from Earth is hindered by tidal locking, the phenomenon responsible for the Moon having a permanent far side. Only occasional libration, a slight wobble in the Moon's axis, reveals the Orientale as a faint, shadowy blur.
The Science Behind the Mission
Tidal locking results from Earth's gravitational influence over billions of years, gradually slowing the Moon's rotation until it is perfectly synchronized with its orbital period. As NASA explains, it is akin to a dancer who always faces their partner while circling them.
Beyond this spectacular sight, the Artemis II mission holds profound scientific importance. The crew will conduct detailed studies of the lunar surface, which is heavily cratered from ancient asteroid bombardments. One hypothesis suggests that such an asteroid impact on Earth may have distributed the essential building blocks for life.
Mission specialist Christina Koch has described the Moon as a silent witness to Earth's history. She emphasized, 'We can learn more about solar system formation, about how planets form... about the likelihood of life out there, starting with studying the Moon.' Additionally, for added intrigue, a Kreutz sungrazer comet will pass near the Sun's surface during their journey, though the primary focus remains on lunar exploration.
