Tag: engineering

The new Mars rover…

8:54 am

Tonight at 10:30 pm (Pacific), the new Martian rover Curiosity will hopefully touch down safely on the Martian surface to begin several years of research in the crater Gale.

What has been most amazing to me is the amount of interest in this landing by the press, especially the mainstream press. Normally these outlets don’t care that much for space exploration, a trend that began after the Apollo 11 landing in 1969 when it became trendy in liberal circles to down play space exploration so that “the money could instead be spent solving our problems here on Earth.”

Today, however, I count more than forty news articles on this upcoming landing, most of which come from mainstream sources. It seems that these outlets have finally discovered something that has been obvious from the beginning: the American public is fascinated with space exploration, and if you want to attract readers, it is better to provide coverage of what interests them rather than push a political agenda that few agree with.

Anyway, if you want to follow the landing live, go here for a full outline of options. Or go directly to NASA TV. Most of what you will see will the control room at JPL, with many engineers staring at computer screens waiting to find out if the landing was a success, about twenty minutes after it took place. This is because it will take that long for the communications signals to travel from Mars to the Earth. Essentially, Curiosity is on its own in this landing.

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More signs that the Voyager 1 spacecraft is about to enter interstellar space.

2:27 pm

More signs that the Voyager 1 spacecraft is about to enter interstellar space.

For the last seven years, Voyager 1 has been exploring the outer layer of the bubble of charged particles the sun blows around itself. In one day, on July 28, data from Voyager 1’s cosmic ray instrument showed the level of high-energy cosmic rays originating from outside our solar system jumped by five percent. During the last half of that same day, the level of lower-energy particles originating from inside our solar system dropped by half. However, in three days, the levels had recovered to near their previous levels.

A third key sign is the direction of the magnetic field, and scientists are eagerly analyzing the data to see whether that has, indeed, changed direction. Scientists expect that all three of these signs will have changed when Voyager 1 has crossed into interstellar space. A preliminary analysis of the latest magnetic field data is expected to be available in the next month.

Based on this report, expect scientists to announce that Voyager 1 has left the solar system sometime before the end of the year.

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Alan Boyle at NBC tonight reports that Boeing, SpaceX, and Sierra Nevada are the winning companies in the competition to provide human ferrying services to ISS.

6:20 pm

Alan Boyle at NBC tonight reports that Boeing, SpaceX, and Sierra Nevada are the winning companies in the competition to provide human ferrying services to ISS, to be announced officially by NASA tomorrow.

The report does not provide dollar numbers. This Wall Street Journal story says that Boeing and SpaceX will be the prime contractors, which suggests that Sierra Nevada will be getting a smaller award.

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The disappearance of the old-fashioned chemistry set.

9:52 am

The disappearance of the old-fashioned chemistry set.

Here’s what it used to be like, when we lived in a free society:

By the 1920s and 30s children had access to substances which would raise eyebrows in today’s more safety-conscious times. There were toxic ingredients in pesticides, as well as chemicals now used in bombs or considered likely to increase the risk of cancer. And most parents will not need to be told of the dangers of the sodium cyanide found in the interwar kits or the uranium dust present in the “nuclear” kits of the 1950s.

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The Marines have put in an order for 12,000 M1911 pistols, the iconic 45 caliber pistol designed by John Browning more than a 100 years ago and used by the American military for most of the first half of the 20th century.

1:17 pm

Comeback: The Marines have put in an order for 12,000 M1911 pistols, the iconic 45 caliber pistol designed by John Browning more than a 100 years ago and used by the American military for most of the first half of the 20th century.

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One of Kepler’s reaction wheels — used to orient the space telescope — has failed.

7:08 pm

Bad news: One of Kepler’s four reaction wheels — used to orient the space telescope — has failed.

Kepler only needs three wheels to function – one to control the probe’s motion along each axis – and the probe resumed its observations on 20 July. “Kepler is functioning very well on three reaction wheels,” says mission manager Roger Hunter of NASA’s Ames Research Center in Moffett Field, California. If the glitch can’t be fixed, though, Kepler will be left without a backup wheel. “This is reducing the odds of making the mission go as long as we can,” says Kepler chief scientist William Borucki of NASA Ames, who doubts that Kepler could point accurately enough to look for transiting planets if reduced to two reaction wheels. “It was a disappointing surprise to find this wheel stopped so early.”

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