Year: 2011

The Winds of Mars

9:04 pm

changing martian dunes
Images taken 1363 days apart.

In two different papers published in two different journals in the past month, scientists have concluded that — despite the thinness of the planet’s atmosphere — the dunes and sands of Mars are being continually shaped and changed by its winds. In both papers the data from which this conclusion was drawn came from high resolution images taken by the HiRISE camera on Mars Reconnaissance Orbiter.

What is especially interesting about this conclusion is that the climate models that had been developed for the Martian atmosphere, combined with wind measurements gathered by the various Martian landers, had all suggested that the kind of strong winds necessary to move sand were rare. To quote the abstract of the paper published on Monday in the journal Geology, Bridges, et al,

Prior to Mars Reconnaissance Orbiter data, images of Mars showed no direct evidence for dune and ripple motion. This was consistent with climate models and lander measurements indicating that winds of sufficient intensity to mobilize sand were rare in the low-density atmosphere.

Similarly, the second paper, Silvestro, et al, published on October 22 in Geophysical Research Letters, stated that

results from wind tunnel simulations and atmospheric models show that such strong wind events should be rare in the current Martian atmospheric setting.

Yet, both studies found significant evidence that such winds do occur on Mars, and are moving sand in many different places.
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Congress has slashed the budget of John Holdren’s White House Science Office

4:22 pm

The Senate/House final deal for the White House Science Office has slashed its budget by one third.

Frustrated that White House officials [i.e. John Holdren] have ignored congressional language curtailing scientific collaborations with China, legislators have decided to get their attention through a 32% cut in the tiny budget of the Office of Science and Technology Policy (OSTP).

See this story for more background.

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Government inspector forces private citizens in a private house to pour bleach on home-grown food

1:20 pm

We’re here to help you: A government inspector arrives during a meal and forces private citizens on private property to destroy the home-grown food.

Susan [the inspector] deemed our food unfit for consumption and demanded that we call off the event because:

1. Some of the prepared food packages did not have labels on them. (The code actually allows for this if it is to be consumed within 72 hours.)

2. Some of the meat was not USDA certified. (Did I mention that this was a farm to fork meal?)

3. Some of the food that was prepared in advance was not up to temperature at the time of inspection. (It was being prepared to be brought to proper temperature for serving when the inspection occurred.)

4. Even the vegetables prepared in advance had to be thrown out because they were cut and were then considered a “bio-hazard”.

5. We did not have receipts for our food. (Reminder! This food came from farms not from the supermarket! I have talked with several chefs who have said that in all their years cooking they have never been asked for receipts.)

I don’t actually agree with most of the ideas of the organic farm-to-fork movement. However, I find it beyond disgusting that our government thinks it has the right tell us what we can eat.

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Bronze artifact found in Alaska

11:32 am

A bronze artifact, resembling the remains of a buckle and a thousand years older than the house being excavated, has been found by archeologists in Alaska.

One Asia archaeologist suggested the piece may have been part of a harness or horse ornament. The researchers are looking for an East Asia expert to confer with on the bronze piece. Mason said it’s not likely the bronze piece was washed ashore after being dropped by a Russian explorer or a whaler. “That’s totally unlikely, in fact nearly impossible, considering where it is,” he said.

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NASA budget compromise

8:27 am

Congress has come up with a NASA budget compromise. More details here.

Overall, the NASA budget is cut by about a half billion dollars, the total matching what the agency got in 2009. The key figures are $406 million for commercial manned space, $3 billion for NASA’s in-house heavy-lift rocket and capsule, and $529 million to finish the Webb telescope.

I predict that the $3 billion will be a waste of money, the project getting cancelled before completion.

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