Charles Bolden has come out of hiding

Today NASA administrator Charles Bolden spoke at the AIAA meeting in Orlando. According to Florida Today, he said two things of interest:

  • He is proud of the achievements of the shuttle program and is sad the program is ending.
  • He believes flying three more shuttle missions would be safe.

Considering that his administration has done nothing to save the program, and in fact has almost seemed eager to shut it down at times, his sadness seems incredibly insincere and self-serving.

As for his second comment about the shuttle’s safety, I wonder how he knows this, especially since his own engineers are currently struggling to pin down the root cause of the external tank cracks that have delayed the last flight of Discovery, and appear to be a chronic problem that needs to be fixed before any shuttle can once again fly.

Root cause of tank cracks possibly found

NASA engineers think they might have found the root cause of the cracks that have been appearing on the shuttle external tank. The cracks appear on structural units called stringers. Key quote:

“Some material used for the stringers was found to be ‘mottled,’ with a different surface appearance than the standard material. Testing revealed this mottled material had lower fracture toughness than the nominal material and exhibited unstable crack growth. All of the cracks found during tanking as well as cracks fixed during manufacturing were located on stringers made with this mottled material.”

Opportunity at Santa Maria Crater, as seen from space

The image below was taken by Mars Reconnaissance Orbiter on New Year’s Eve. It shows the rover Opportunity on the rim of stadium-sized Santa Maria Crater, where scientists plan to spend the next two months exploring the crater.

Opportunity has truly been an astonishing success for NASA’s planetary science program. The rover has operated on the Martian surface since 2004, almost seven years beyond its original mission length. It is presently about halfway on its long journey to the much larger Endeavour Crater (14 miles in diameter), still several miles away.

Opportunity at Santa Maria

A plunge in solar activity in December

The monthly update of the Sun’s developing sunspot cycle was published tonight by NOAA’s Space Weather Prediction Center. You can see the newest graph below, which shows the slow rise in sunspots (blue/black lines) in comparison with the consensis prediction made by the solar science community in May 2009 (red line).

Not only does the Sun’s generally quiet trend continue, its activity took an additional plunge in December, dropping significantly from the previous month. This drop is probably due to the seven days of no sunspots that took place in mid-December.

All in all, we continue to head for the weakest maximum in two hundred years (see the graph on this page), which in the past meant very cold weather. Though scientists do not yet understand why the Sun does this or how these changes in solar activity influence the climate as much as they do, that this in now happening at a time when we have the technology to truly study it is an opportunity that must not be missed.

The December sunspot graph

Naked bodies and a new Messiah

If anyone had any doubt that the global warming movement is undergoing a serious collapse, this so-called news article from Spiegal Online, entitled “Naked bodies and a new Messiah: Green groups are trying to sex up climate change,” probably lays that doubt to rest. Key quote:

Environmentalists and scientists are concerned about the massive drop in public interest in the topic over the last year. Now they are looking for new strategies to turn the tide. They’re searching for so-called “mind bombs” — highly emotional images that reduce a complex problem down to one core message.

Sadly, the article never asks the fundamental question: What do “mind bombs” have to do with facts, data, and proving your theories are correct in the real world?

The answer of course is obvious: Nothing.
» Read more

Engineers considering repairs to shuttle tank

NASA engineers are considering giving Discovery’s external tank the equivalent of a girdle in order to keep it from developing more cracks during launch. Key quote:

If that decision is made, it is unlikely NASA could complete the work, repair the tank’s foam insulation and get Discovery back out to the launch pad in time to support a launch attempt during the next available window, which opens Feb. 3 and closes Feb. 10. Work to beef up all 108 stringers at the top of the intertank almost certainly would delay Discovery’s launch on a space station resupply mission to the next available window, which opens Feb. 27 and closes in early March.

1 1,034 1,035 1,036 1,037 1,038 1,086