An evening pause: The Christmas eve telecast by the Apollo 8 astronauts from lunar orbit, December 24, 1968, probably the most listened to space telecast in history. The story behind how and why these men said what they did is the central theme of my first book, Genesis, the Story of Apollo 8.
NASA engineer James Fincannon emailed me the image below, cropped from this Lunar Reconnaissance Orbiter scan. It shows a side view of the same lunar pit previously discussed by me in July (here and here).
This image below was almost certainly ordered up by LRO scientists after seeing the images above so that they could get a look at the pit’s walls. I have further cropped it and blown it up so we can get a really good look too! See the second image below.
In this side view, we are looking across the top of the pit at the far wall and floor. On that far wall you can see what look like three coarse horizontal layers, below which is a deeply shadowed floor layer that is probably either cave passage or a significant overhang. Further processing will probably be bring out some further details and hopefully answer this question.
In a previous post, I had noted that this wall is probably about 200 feet deep. This new image thus gives any experienced rock-climber or caver a very nice sense of what a rappel down the side of that pit would be like. To me, it reminds me of some of the open-air cave pits I’ve rappelled into in New Mexico.
Update: I should note that that overhang/cave entrance at the bottom of the pit is probably at least 30 feet high. An impressive entrance, indeed.
Also, lunar scientist Paul Spudis emailed me with these comments:
[The pit] is very similar to some tube systems that I have studied in Hawaii. The wall units are exposed lava flows. They are probably all from the event which made this flow — a single flow can be made up of multiple flow units, hence, the apparent “layering.”
Of course, getting into an open pit and then moving through open void lava tubes that radiate from it are two different things. In terrestrial tube systems, many tubes are open and accessible but sometimes they are not. They can be blocked up by frozen lava or rubble from adjacent tube collapse.
Unfortunately, I don’t think we’re going to know what the situation on the Moon is until we get there. However, I must say, this particular area looks very promising.
The image below was produced by Lunar Reconnaissance Orbiter by assembling data from numerous images over six months. The levels of brightness and darkness indicate the percentage of time in which an area is sunlight. The red dot just below the rim of Shackleton shows the approximate location of the south pole.
As you can see, the rim of Shackleton Crater nearest the south pole is illuminated by the sun most of the time, while the nearby crater floor never gets sunlight. This data confirms what Japanese scientists found using their lunar probe, Kaguya. The south pole has the ideal combination of locations with nearly continuous bright sunlight (to provide power) and nearly continuous darkness (where explorers will likely find significant amounts of frozen water), making this is an excellent location to build that first lunar base. And from the image you can see that the Shackleton Crater rim is not the only spot near the south pole with these conditions.
Also, if you look at the close-up image of Shackleton’s rim that I posted here, you will see that there is plenty of room to land and set up residence.
A Croatian space mission to the Moon?
Videos from the Chinese lunar probe, Chang’e 2.
Take a look at these spectacular images China released from its Chang’e 2 lunar probe that they say show potential landing sites for later Chinese probes.
China today released the first photos taken by Chang’e 2, its second lunar orbiter launched on October 1. More here, including one image.
The private race to the Moon, led by the Google Lunar X Prize. Key quote:
The Google Lunar X PRIZE offers a total of $30 million in prize money to the first privately funded teams to land robots on the Moon that explore the lunar surface by moving at least 500 meters and by sending back two packages of high definition video and photos we call Mooncasts. Unlike our first competition, the $10 million Ansari X PRIZE, the Google Lunar X PRIZE isn’t a ‘winner take all’ proposition: instead, we have a $20 million Grand Prize, a Second Place Prize that will award $5 million to the second team to meet all of the requirements, a series of technical bonus missions that can allow teams to earn as much as an additional $4 million, and a $1 million award that will go to teams that make the greatest contribution to stimulating diversity in space exploration and, more generally, in science, technology, engineering, and mathematics.
The competition operates on a “payment on delivery” model: the prize money is only given to teams after they complete a successful mission, meaning that each team needs to raise all the capital needed to design, develop and conduct their missions on their own. We’re now three years into a fairly long effort: the prize is available until all of the prize purses are claimed or until the end of the year 2015. Last week, we accepted our 24th team into the competition.
Paul Spudis provides a very detailed analysis of the recently released LCROSS lunar results. Key quote:
The Near-IR spectrometers on the LCROSS shepherding satellite detected abundant water (H2O) but also hydrogen sulfide (H2S), ammonia (NH3), methanol (CH3OH), methane (CH4), ethylene (C2H4) and sulfur dioxide (SO2). The uv-vis spectrometer found carbon dioxide (CO2), sodium, silver, and cyanide (CN). Aboard the distant LRO spacecraft, the ultraviolet LAMP imager detected hydrogen (H2), nitrogen, carbon monoxide (CO), sodium, mercury, zinc, gold (!), and calcium. But water, present in quantities between 5 and 10 weight percent, is the most abundant volatile substance present.
New results from the LCROSS impact on the Moon’s south pole: It’s cold and wet at the Moon’s south pole.
Update: Other elements detected in the impact plume included silver and mercury.
The Moon stinks of gunpowder.
The possibilities for China’s Chang’e 2 lunar probe include travel far beyond the Moon.
The various partners running the ISS are considering using it as a platform to launch an orbital manned mission to the Moon.
China’s new lunar orbiter, Chang’e 2, has arrived in lunar orbit.
Digitally remastered footage of the original television recordings from the Apollo 11 mission have been unveiled in Australia.
The Lunar X Prize award for putting the first privately funded robot on the Moon by 2012 is now set at $30 million.
The second Chinese probe to the Moon did more than take off on Friday. It also rained pieces of metal down on a Chinese villages in Suichuan County, Jiangxi, China.
China has launched its second unmanned lunar probe, designed to photograph the Moon from an orbit altitude of 9 miles.
The launch of China’s next lunar probe, Chang’e 2, could occur as soon as this Friday.
Lost video footage of Neil Armstrong’s first step on the Moon found in Australia.
Too much water on the Moon?
Check out these newly posted images of lunar cave pits, taken by Lunar Reconnaissance Orbiter. The depth estimates range from 100 to 300 plus feet.
[Ed. I should note that some of these images have already been posted on behindtheblack. For example, the center image found here) was first discovered by reader James Fincannon and posted by me on July 15 and July 26, when I discussed the challenges of accessing the bottom of these pits. I also posted an image of the Mare Ingenii pit on July 13.]
On August 9, 2010 the camera on Lunar Reconnaissance Orbiter took some routine calibration images and captured the Earth from lunar orbit, showing the western hemisphere with relatively little cloud cover. The picture below is a tiny piece from that global image, cropped to show the United States. The details are pretty remarkable, considering the distance. You can explore the full global image in detail here.
New results from Lunar Reconnaissance Orbiter, including a new global topographic map.
From the caption: A lunar topographic map showing the Moon from the vantage point of the eastern limb. On the left side of the Moon seen in this view is part of the familiar part of the Moon observed from Earth (the eastern part of the nearside). In the middle left-most part of the globe is Mare Tranquillitatis (light blue) the site of the Apollo 11 landing, and above this an oval-appearing region (Mare Serenitatis; dark blue) the site of the Apollo 17 landing. Most of the dark blue areas are lunar maria, low lying regions composed of volcanic lava flows that formed after the heavily cratered lunar highlands (and are thus much less cratered).
Europe to the Moon! The U.S. may no longer have a coherent lunar exploration program, but Europe sees that water at the Moon’s south pole and wants it, awarding contracts today to begin the work of getting a lunar lander there.
University of Arizona scientists have built a hydroponic lunar vegetable garden on Earth. More information here. Key quote:
The membrane-covered module can be collapsed to a four-foot-wide disk for interplanetary travel. It contains water-cooled sodium vapor lamps and long envelopes that would be loaded with seeds, ready to sprout hydroponically.
Paul Spudis at Air and Space magazine has some more thoughts about the origins of that natural bridge on the Moon that Lunar Reconnaissance Orbiter photographed recently.
