Undersea adventure by robot. An unmanned probe completed its first dive beneath the Arctic ice this week.
The Japanese space agency JAXA has put Hayabusa’s heat shield, outer capsule, and parachute on public display, to large crowds.
The Mars rover Opportunity has spotted its first dust devil after six-plus years of travel.
James Fincannon of NASA took the two images of the Marius Hills lunar pit taken at different times by Lunar Reconnaissance Orbiter (which I posted here) and did an overlay so that the shadow produced by pit’s rim could be easily compared with the rim itself (see below). He then did some calculations based on the sun’s angle of light shining into the cave and came up with the following calculations:
I estimate it is 60 meters from rim to bottom. The floor is flat below the surface. The rocks on the flat surface below ground are in stark relief (hard shadows) compared to above ground due to the sun coming only at one angle while above ground the albedo/reflections makes for soft shadows at this high sun angle (65 deg elevation). I cannot tell if the black portion of the combo image is a slope or more flat floor. Need a different high sun angle or azimuth to fill that in. Still I like the general pattern of the rim matching the shadow on the floor, although the image I found originally has that edge of the cave rim in shadow for a large extent.
A 60 meter drop is about 200 feet deep. This result is reasonably close to the depth estimated by Japanese scientists, 88 meters or 288 feet, based on images of the same lunar pit taken by their Kaguya probe.
Knowing the approximate depth of the entrance pit raises the much more important question: How will future lunar explorers to get to the bottom of this pit? It is ironic » Read more
As I mentioned previously, last weekend I was in West Virginia exploring and surveying some newly discovered cave passages. These pictures, taken by Nikki Fox, will give you a flavor of what it is like to visit a place never before seen by human eyes.
Here I am, trying to sketch the final section of a clean, generally dry flowstone and bedrock passage. Trust me, it isn’t easy drawing a place that your body almost fills.
The lead where this virgin passage began had been known for decades, but had never been entered because » Read more
The Russians unveiled today a new proposed replacement for their Soyuz capsule, capable of carrying six astronauts into orbit. Interestingly, the design does not use parachutes to land, but solid rocket engines.
Well known cave diver and photographer Wes Skiles has died during a dive in Florida.
I just thought I should note quickly that my weekend cave trip was a spectacular success. John Harman, Pete Johnson, Nikki Fox, and myself surveyed almost 800 feet of beautiful and big virgin cave passage. I hope to have pictures soon.
Man, it is really fun to go where no one has ever gone before!
Posting today shall be very quiet, mostly because I am out in West Virginia, exploring a previously unknown upper level in a cave we are mapping. This passage was only discovered last month by Aaron Moses, John Harman, and Pete Johnson, who did a bolt climb of over 70 feet to reach a high lead in the wall of the cave. This weekend we will be pushing and mapping these virgin passages. Below is a picture taken by Brian Masney of Aaron Moses as he worked his way up the wall, with Pete Johnson providing a belay. More of Brian’s pictures can be seen on his Flicker webpage.
This interview of Charles Bolden, NASA administrator, is another example (in a long list of examples) of the clearly misplaced priorities of the Obama administration when it comes to NASA and space exploration.
The key quote is in the first two minutes of the interview [emphasis mine]:
Bolden: When I became the NASA Administrator – before I became the NASA Administrator – [President Obama] charged me with three things: One was that he wanted me to re-inspire children to want to get into science and math, that he wanted me to expand our international relationships, and third, and perhaps foremost, he wanted me to find a way to reach out to the Muslim world and engage much more with predominantly Muslim nations to help them feel good about their historic contribution to science, math, and engineering.
Though all three of these priorities (inspire kids, international cooperation, and help the Muslim world develop) sound nice, none have anything to do with space exploration. More specifically, they have absolutely nothing to do with NASA’s original charter, which was to explore the solar system and encourage the development of the American aerospace industry.
At about 9:50, Bolden then states that “We’re not going to go anywhere beyond low Earth orbit as a single entity. The United States can’t do it. China can’t do it. No single nation is going to go to a place like Mars alone.”
Gee, I wonder what international consortium put those men on the Moon? I always thought the U.S. did it alone. According to Bolden, however, that was impossible: No single nation can do anything alone beyond Earth orbit.
There are more inanities in this interview. Listen for example to his clueless discussion of solar flares at around 19:00 and his statement at 20:30 where he claims an asteroid made of “sand” poses no threat to the Earth.
With leadership like this, the future does not look good for the American aerospace industry.
