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Artemis II Lunar Flyby Science

1:04:57 recording · AUTO · 2 speakers

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Brief overview

Human eyes on Artemis II's lunar flyby delivered science no orbiter alone could, opening a public data era.

  1. Human eyes complement orbiters, never replace themTrained crew with a whole-disk view caught color and albedo nuance that cameras and LRO passes would miss, while LRO data still underpins landing-site work.
  2. Crater counting needs far-side and South Pole samplesRelative ages come from counting craters, but the curve is anchored mostly by Apollo nearside samples clustered around 3 to 3.5 billion years.
  3. Artemis II is the first step, publiclyThe team is releasing the report, the data user's guide, the operations record and all the data so the global community can work with it.
Executive Summary AI
  • Episode 429 of NASA Johnson Space Center's podcast, hosted by Leah Cheshire on the show's ninth anniversary, brings in Dr. Kelsey Young, the Artemis II Science Flight Operations Lead, to answer listener questions submitted to NASA's Threads account.0:05
  • Young describes a lunar science team of roughly 60 people — scientists, visualization and GIS specialists, developers, communications — working two rooms close to but not quite 24-7 against 10 lunar science objectives, and says the debrief showed handovers between shifts were the weak point because sims only ever covered one crew day.6:28
  • Because the illumination depends on the launch date, the team built targets for all 360 degrees of the moon and then, with Dr. Jacob Richardson of Goddard leading the targeting, down-selected within a couple of days once the translunar injection burn fixed which half would be lit; the early-April window cost them some far-side illumination but gained the eclipse.14:17
  • Dating craters was Young's PhD subject: crater counting gives relative ages calibrated by radiometric dates on Apollo samples, so far-side and South Pole samples are needed to anchor the curve — including the basin she calls the largest in the solar system at over 4,000 kilometers across.27:57
  • Impact flashes were one of the team's top-priority objectives and Young did not expect any, yet Victor Glover reported multiple flashes from the unilluminated far side, which Earth-based monitors in Huntsville cannot see; the team is now publishing a preliminary lunar science report, a data user's guide, an operations report and all the data later this year.43:39
Key Quote
“And so therefore, when you walk in the Sur, you walk on the moon and look back at Earth.”
— Kelsey Young13:01
Key Quote
“We actually know the topography of the moon better than we know the topography of Earth.”
— Kelsey Young20:14
Key Quote
“but human beings are able to capitalize on their unique vantage point, and human eyes are really, really sensitive color detectors.”
— Kelsey Young40:27