African Space Agency being proposed
Bureaucrats in space! The ministers of the African Union are proposing creating the African Space Agency to “focus on the development of common space policy for the continent .”
Year: 2010
Spacewalk repair delaying robot repair
The efforts to fix the cooling system on ISS has not only limited use of the humans inside the station. It has delayed the maintenance work of the Canadian-built robot Dextre on the outside of the station.
The Sun’s oxygen content does match the galaxy’s
A preprint paper [pdf] published today on the Los Alamos astro-ph website has found evidence that the oxygen and neon content of our Sun matches the abundances found in the galaxy. This result is important in that previous research has suggested that the Sun’s oxygen abundance was significantly higher than the rest of the galaxy, a possibility that not only caused problems for the theorists but raised interesting questions about the uniqueness of our solar system.
Details on the spacewalk yesterday
William Harwood of CBS News and Spaceflight Now provides a very detailed and clearly written description of the problems experienced during Saturday’s spacewalk, as well as the options faced by NASA to overcome them.
Robot to explore Egyptian pyramid
British engineers/scientists are about to send a robot into the Great Pyramid at Khufu in Egypt to find out what lies hidden behind the doors at the end of two 200 foot long shafts. Fun quote:
No one knows what the shafts are for. In 1992, a camera sent up the shaft leading from the south wall of the Queen’s Chamber discovered it was blocked after 60 metres [200 feet] by a limestone door with two copper handles. In 2002, a further expedition drilled through this door and revealed, 20 centimetres [8 inches] behind it, a second door.
“The second door is unlike the first. It looks as if it is screening or covering something,” said Dr Zahi Hawass, the head of the Supreme Council who is in charge of the expedition. The north shaft bends by 45 degrees after 18 metres [60 feet] but, after 60 metres, is also blocked by a limestone door.
ISS tour, part 1
An evening pause: We talk a lot about the International Space Station. Why not take a tour? In this January 2009 video, part 1 of 4, astronaut Mike Finke starts us out at the docking port used by the shuttle and takes us through the Harmony and Kibo modules. Along the way he gives a great view out the port side of the station.
You can see the remaining parts of Mike’s tour by clicking through, or you can wait until I post them over the next week.
Aqua tracks carbon monoxide over Russia from wildfires
Data from the AIRS instrument on NASA’s Aqua satellite shows the dramatic increase in carbon monoxide in the atmosphere at 18,000 feet over Russia due to the wildfires there. Key quote from press release:
The concentration of carbon monoxide is continuing to grow. According to Aug. 4 NASA estimates, the smoke plume from the fires spans about 3,000 kilometers (1,860 miles) from east to west.
August 8 WhiteKnightTwo test flight
Scaled Composites successfully completed the 34th test flight of WhiteKnightTwo today.
3rd spacewalk planned to finish repairs
NASA said late yesterday that a third spacewalk will be needed to finish the replacement of the failed pump module in the station’s cooling system.
Moody Blues – For My Lady
An evening pause: The Moody Blues, live, singing For My Lady.
Mapping daylight at the Moon’s South Pole
Using data from the Japanese lunar orbiter Kaguya, scientists have identified several locations near the Moon’s south pole that are in daylight from 86 to 94 percent of the time. Key quote from abstract:
The place receiving the most illumination (86% of the year) is located close to the rim of Shackleton crater at 88.74°S 124.5°E. However two other areas, less than 10 km apart from each other, are collectively lit for 94% of the year. We found that sites exist near the south pole that are continuously lit for several months during summer. We were also able to map the locations and durations of eclipse periods for these areas. Finally we analyzed the seasonal variations in lighting conditions, from summer to winter, for key areas near the south pole. We conclude that areas exist near the south pole that have illumination conditions that make them ideal candidates as future outpost sites. [emphasis mine]
Below is a composite close-up image of the rim of Shackleten crator that I assembled using this Lunar Reconnaissance image. The key quote from the full caption :
The full [Narrow Angle Camera] mosaic reveals a shelf on the southeast flank of the crater that is more than two kilometers across and perfectly suitable for a future landing. The extreme Sun angle gives the surface an exaggerated rough appearance, but if you look closely at this scale any area that is between the small craters might make a good landing site.
First spacewalk to replace pump module
The first spacewalk to replace the failed pump module on ISS is finished, and it did not go as well as hoped. The astronauts had problems removing one of four cooling system ammonia lines to the old pump. They eventually succeeded, actually using a hammer to lightly tap the quick-disconnect latch free. They then had to seal an ammonia leak coming from the problematic line. These issues caused them to run out of time, preventing them from removing the old pump and installing the new one. It is expected they will pick up where they left off on the next spacewalk, presently scheduled for Wednesday.