Shadowcam on South Korea’s Danuri lunar orbiter sees no obvious ice in the permanently shadowed interior of Spudis crater
Using Shadowcam, a camera built by Arizona State University that is on South Korea’s Danuri lunar orbiter and is designed to see into very dark regions of little light, scientists have obtained optical images showing the permanently shadowed interior of Spudis Crater, located only about ten miles from the Moon’s south pole.
That picture is below. To the left is an annotated overview created from Lunar Reconnaissance Orbiter (LRO) high resolution images. The white box inside Spudis Crater indicates the area covered by the section of the Shadowcam image I have focused on. The red outlines indicate areas that are thought to be permanently shadowed. The relatively flat ridgeline between Shackleton and Spudis is one of the prime future landing sites for NASA’s Artemis program.
Click for original image.
From the caption:
The scalloped boundary likely formed when a landslide reached the bottom of the east wall and stopped abruptly against a large debris pile. Alternatively, rather than a landslide, the deposit formed as impact melt flowed down the east crater wall.
The text of the caption is especially interesting in what it does not say. It makes no mention of any visible evidence of ice. Nor does any appear obvious in this Shadowcam picture. These results match earlier Shadowcam images of the interiors of the craters Shacketon and Marvin (just to the left of Spudis outside of view).
The ice could still be there, impregnated within the regolith on the crater floor. That it is not obvious however suggests accessing it will not be easy should anyone build a manned lunar base at this location. These images suggest that the ground will have to be mined very carefully (so that the ice doesn’t sublimate away), than processed to extract that ice.
It is also possible that these images prove that no ice at all exists in these permanently shadowed craters. If so, then a different theory than water-ice will be needed to explain the signature of hydrogen that has been found here.
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Using Shadowcam, a camera built by Arizona State University that is on South Korea’s Danuri lunar orbiter and is designed to see into very dark regions of little light, scientists have obtained optical images showing the permanently shadowed interior of Spudis Crater, located only about ten miles from the Moon’s south pole.
That picture is below. To the left is an annotated overview created from Lunar Reconnaissance Orbiter (LRO) high resolution images. The white box inside Spudis Crater indicates the area covered by the section of the Shadowcam image I have focused on. The red outlines indicate areas that are thought to be permanently shadowed. The relatively flat ridgeline between Shackleton and Spudis is one of the prime future landing sites for NASA’s Artemis program.
Click for original image.
From the caption:
The scalloped boundary likely formed when a landslide reached the bottom of the east wall and stopped abruptly against a large debris pile. Alternatively, rather than a landslide, the deposit formed as impact melt flowed down the east crater wall.
The text of the caption is especially interesting in what it does not say. It makes no mention of any visible evidence of ice. Nor does any appear obvious in this Shadowcam picture. These results match earlier Shadowcam images of the interiors of the craters Shacketon and Marvin (just to the left of Spudis outside of view).
The ice could still be there, impregnated within the regolith on the crater floor. That it is not obvious however suggests accessing it will not be easy should anyone build a manned lunar base at this location. These images suggest that the ground will have to be mined very carefully (so that the ice doesn’t sublimate away), than processed to extract that ice.
It is also possible that these images prove that no ice at all exists in these permanently shadowed craters. If so, then a different theory than water-ice will be needed to explain the signature of hydrogen that has been found here.
Readers!
Please consider supporting my work here at Behind the Black. Your support allows me the freedom and ability to analyze objectively the ongoing renaissance in space, as well as the cultural changes -- for good or ill -- that are happening across America. Fourteen years ago I wrote that SLS and Orion were a bad ideas, a waste of money, would be years behind schedule, and better replaced by commercial private enterprise. Only now does it appear that Washington might finally recognize this reality.
In 2020 when the world panicked over COVID I wrote that the panic was unnecessary, that the virus was apparently simply a variation of the flu, that masks were not simply pointless but if worn incorrectly were a health threat, that the lockdowns were a disaster and did nothing to stop the spread of COVID. Only in the past year have some of our so-called experts in the health field have begun to recognize these facts.
Your help allows me to do this kind of intelligent analysis. I take no advertising or sponsors, so my reporting isn't influenced by donations by established space or drug companies. Instead, I rely entirely on donations and subscriptions from my readers, which gives me the freedom to write what I think, unencumbered by outside influences.
You can support me either by giving a one-time contribution or a regular subscription. There are four ways of doing so:
1. Zelle: This is the only internet method that charges no fees. All you have to do is use the Zelle link at your internet bank and give my name and email address (zimmerman at nasw dot org). What you donate is what I get.
2. Patreon: Go to my website there and pick one of five monthly subscription amounts, or by making a one-time donation.
3. A Paypal Donation or subscription:
4. Donate by check, payable to Robert Zimmerman and mailed to
Behind The Black
c/o Robert Zimmerman
P.O.Box 1262
Cortaro, AZ 85652
You can also support me by buying one of my books, as noted in the boxes interspersed throughout the webpage or shown in the menu above.
Can I be the first to say it out loud? There is NO ICE in the shadows of the craters on the Moon! None at all! We need to rethink how future bases will get water, perhaps by importing it. The dream is over!
David M. Cook: Though I have always agreed that no ice has always been a very strong possibility, and have written about this possibility numerous times (unlike all other press outlets), it is still not a certain finding.
What the Shadowcam images tell us, at a minimum, is that getting water at the South Pole of the Moon is not going to be simple, and maybe impractical. This is a major finding, regardless.
“If so, then a different theory than water-ice will be needed to explain the signature of hydrogen that has been found here.”
Hydrocarbons. Like the black tarry stuff on comets. Even better then water as you get carbon. Plenty of oxygen in lunar rocks.
The ice is likely present as an intimate mixture with the regolith rather than as discrete chunks of ice.
Bill Farrand: Yes, being intermixed in the regolith is certainly a possibility, as I mention in the post. However, much of the push to go the south pole has been based on the hope of the relatively easy availability of water ice. Discrete chunks of ice were often postulated.
These pictures appear to eliminate that possibility. Water will not be easy to get, at all, even if it is there. The processing will be complex, with involved engineering in the crater, so that the water in the regolith doesn’t sublimate away by exposure to sunlight.
If so, these images are a major finding.