Summary
Highlights
The Artemis II mission is progressing exceptionally well, with the crew remaining healthy and excited for the upcoming lunar flyby. Crew members shared their awe-inspiring views of Earth and the Moon, highlighting the unique perspective of being halfway between these celestial bodies. They discussed the ability to see lunar features in three dimensions, a testament to human stereo vision. Charlie Duke, Apollo 16 astronaut, sent a message of encouragement, drawing a parallel with the lunar module 'Orion' from his mission to the current Orion spacecraft. A photo taken by Christina of Earth from Orion’s window showcased the vast distance from home, emphasizing the mission's scope.
The mission is gearing up for an exciting lunar flyby, the first in over 50 years. The discussion emphasized the moon's scientific significance, formed from the same material as Earth after a massive collision. The moon acts as a 'witness plate' to 4.5 billion years of solar system history. The mission blends human and robotic exploration, complementing each other's strengths. Beyond lunar observations, the mission includes human health studies, such as the avatar experiment, to inform future long-duration missions. This mission also serves as a crucial training ground for science and engineering teams to work collaboratively in real-time, preparing for future lunar surface operations.
The flight operations team detailed recent crew activities. This included a manual piloting exercise to characterize spacecraft performance with disabled thrusters, a public affairs event with the Canadian Space Agency, medical conferences, and a review of the science plan. They also performed CO2 removal capability tests and practiced wearing orange launch and entry suits in zero gravity. Contingency scenarios were rehearsed, such as drinking protein shakes and delivering medication while suited. Tonight, the outbound trajectory correction maneuver number three will be performed. Other activities include in-flight maintenance demonstrations and an optical communication system test to increase bandwidth to 100mbps. A significant milestone will be Orion entering the lunar sphere of influence at 12:40 AM eastern time, where the Moon's gravity becomes stronger than Earth's.
The planning team in Mission Control, particularly the overnight shift, was the first to see downlinked images from Orion, underscoring their critical role. Pilot Victor Glover shared poignant remarks about Earth being an 'oasis' in the universe, promoting unity and shared existence. Lori expressed confidence in a public engagement spike during the lunar flyby and splashdown, and urged everyone to help disseminate information about this unifying mission.
Kelsey Young, lead science officer, detailed the lunar targeting plan for the upcoming flyby. This software guides crew observations during the several-hour flyby, though astronauts are encouraged to explore compelling features outside the plan. The plan covers ten lunar science objectives, providing specific prompts for both camera operators and those observing with the unaided eye. Images of Victor Glover studying the plan on his tablet and the crew practicing with flight hardware and an inflatable moon globe showcased their extensive training. The flyby will be a roughly five-hour period of observing the illuminated lunar surface, including past Apollo landing sites (12 and 14) and features like Reiner Gamma. During a loss of signal period, observations will continue. A unique event will be observing an eclipse from Orion's vantage point, and capturing images of planets like Mercury, Venus, Mars, and Saturn, along with potential earthshine effects.
The mission aims to gather data for future long-term goals, including scouting potential landing sites for establishing a base on the Moon's South Pole. Crew members will observe the edge of the south polar region and the South Pole-Aitken basin. The pace of observations is set to allow time for detailed insights, with targets lasting between 8 and 20 minutes. During the first five-hour observation period, the crew will work in pairs, swapping roles to maintain focus. The science evaluation room will monitor crew observations, synthesizing descriptions, and downlinking images for further analysis. Preparations for Artemis science operations have been ongoing for years, with specific Artemis II science planning ramping up over a year ago to integrate with flight operations and build the science evaluation room.
The cameras being used are Nikon D5s and a Nikon Z9, with images being downlinked as bandwidth allows, and the rest retrieved post-splashdown. The speed of donning spacesuits is not a critical factor due to the spacecraft's ability to maintain cabin pressure. While the crew won't feel the speed, visualizations show they will be moving slow enough for robust observations. Public engagement has been strong and is anticipated to spike during the flyby and splashdown. The 'arrival point' at the Moon is defined as when Orion enters the lunar sphere of influence, where the Moon's gravity is stronger than Earth's. The spacecraft uses the Moon's gravity for a 'slingshot' effect to head back towards Earth.
A 'mystery smell' reported by the crew remains unexplained, but does not impact mission operations or toilet use. The optical communication system has performed well, streaming live video to ground sites, and a planned increase to 100mbps will expedite data downlink. The lunar science team began preparing for the flyby after the crew's selection, developing science objectives and integrating with flight operations. When asked about wish list items, Kelsey Young emphasized the potential for unexpected discoveries, particularly regarding lunar color variations and topography, which human eyes are uniquely skilled at discerning. She highlighted that even negative observations (not seeing something expected) are valuable scientific results.
Orion will surpass the Apollo 13 distance record by humans at 248,655 statute miles. Tonight, it will reach its farthest distance from Earth at 252,760 miles. At closest approach, 21% of the moon's far side will be illuminated. Kelsey Young shared personal reflections, emphasizing the universal connection people have with the moon and the excitement of exploration. She highlighted the role of the mission in inspiring future generations and uniting people through a shared sense of wonder, especially with the upcoming eclipse. The team anticipates an inspiring and scientifically rich experience for all.