DeLurking and the Center of the Universe

Over at Astronomy Blog, Stuart has made a list of us bloggers who reported from AAS, and along the way mentions that this is (was) Delurking Week. If you don’t know, this is the week that you should be commenting on blogs that you read, rather than leaving those commmenting boxes blank and lonely. So, comment away! I won’t mind.

Stuart also links to a great little vodcast created at the opening reception of the AAS meeting by the Slacker Astronomers. They went around the reception asking questions like “What size underwear do you wear” (to which Phil Plait answered “M”), and “What’s the center of the universe—Earth or the Sun?”

Lots of funny answers to that one, including one from Phil (again) who promptly said, “My daughter.” Of course, there is NO preferred spot in the universe, so you could say that Earth or the Sun are the center, but then again, if you were attending AAS on Alpha Centauri IV, you could say the center was there, too. At least most of the astronomers who answered knew that it was a funny question and had a good time with it.

A Questionable NASA Hire?

Normally I do not do political commentary, but occasionally a story comes across that requires a few words. What follows is one of them. I wonder what will happen to NASA now that a former second-in-command for FEMA during the Hurricane Katrina disaster has been hired as a so-called “senior advisor” to NASA administrator Michael Griffin?

In a Washington Post story, NASA spokesman David Mould said that Patrick Rhode, who started his unlikely career toward scientific policy as an advance man for the Bush-Cheney election campaign in 2000, was a good choice for the job because, “He’s done a lot of things.”

Some of those things include a well-circulated email that he sent to his boss during the Katrina disaster, telling Brown that he, too was sitting somewhere moussing his hair. (This while New Orleans drowned, homes in Mississippi, Louisiana, Alabama, Florida, and Texas were torn apart, and thousands of people were left homeless and at the mercy of FEMA officials.)

Our top NASA officials should have science background, along with some solid policy and technology experience. Rhode does not. It seems that the Bush administration keeps topping its own worst picks record by choosing yet another politically connected insider for a job he’s apparently not-too-well-qualified-for. Rhode’s background apparently includes NO science and little technology expertise, he began his career as a TV reporter (not that being a journalist is bad, and I know some science journalists who have more science background than Rhode does), and wiggled his way into a series of policy jobs that appear to have been political payoff for his support of Bush/Cheney. Okay, let’s call this what it is: patronage. And,there are some jobs and places in our government where patronage hurts (think FEMA). NASA is another.

And you have to wonder why some kids in the U.S. think that NASA is irrelevant. When we see such poorly chosen officials rewarded with patronage jobs at the top of the NASA administration, it begins to look like our space agency isn’t taken seriously by the administration. These people seem to operate at the center of an alternate universe where ideology trumps logic and scientific expertise. Will “Mr. Mousse” choose politics over safety as he “advises” the NASA administrator in the months to come? We don’t want to see any more disasters at NASA, and we especially don’t want to see loss of life, followed by a Rose Garden medal ceremony for this hack, and a “heckuva job, Rhodie” slap on the back from his political godfathers in the White House.

An interesting note: the Washington Post picked this story up late Friday (the usual time the White House announces bad news) from the Associated Press, but I see nothing on it on CNN or MSNBC or any of the other main news outlets (as of Saturday night). Let’s see how it unfolds over the next few days.

Comets and Hobbits

Comet McNaught is fast fading from Northern Hemisphere skies (and my last good opportunity to see it is tonight right after sunset, if it isn’t cloudy here). We’ll give it a try, but I fear that the chances are slim, due to the immense cloud cover we have right now over Massachusetts. It never fails that when some cool astro-phenomenon is available for viewing, the skies obligingly summon forth the clouds and we see no more. Happens when there are aurora predictions, too.

What does this have to do with hobbits? Well, not much really. But, I was sitting here going through all the press releases I got at the AAS meeting (yes, I’m back in the office again after a day of reasonably good flying yesterday), and I was reading again about the dwarf galaxies that the Sloan Digital Sky Survey has discovered in their survey of the sky. I blogged briefly about the most recent one earlier in the week. But, the press release reminded me of something that happened during the press conference, a little “behind the scenes” look at what us press types experience during these conferences.

So, the astronomers who studied these galaxies described these little guys as “more like than hobbits than dwarf galaxies” (because they’re smaller and fainter than some dwarf galaxies). It’s a cute analogy, and being a Tolkien fan, I find the idea of some undersized galaxies being like little, hairy-footed people to be rather charming.

What struck me right away about the image of the dwarf galaxy Leo T that was the subject of their announcement was how much it looked like an ordinary star cluster as seen through a good backyard telescope. So, I decided to ask (during the Q&A afterwards) about how this sparsely populated galaxy differed from a cluster.

Dwarf galaxy Leo T as seen by the Sloan Digital Sky Survey
Dwarf galaxy Leo T as seen by the Sloan Digital Sky Survey

As luck would have it, Rob Naeye of Sky & Telescope Magazine asked the question first, so I got to follow up with some questions about how the dark matter clumps might be constraining the growth of clusters and dwarfs.

The answer to the question Rob asked, however, turns out to be fairly simple for the galaxy we see here: its size is larger than a cluster. But, more importantly, Leo T has experienced at least two periods of star formation its history. Most star clusters have one episode of star formation and we see stars that are all about the same age. Some of Leo T’s stars are now older than five billion years. But others are much younger (less than a billion years old). And, Leo T still has clouds of hydrogen gas—the main ingredient you need if you’re a galaxy that wants to make more stars.

What I thought was rather interesting was that several of us in the press pool saw that picture and immediately thought “cluster!” I looked around the room and saw Martin Ratcliffe (representing Astronomy Magazine), Govert Schilling (a Dutch science writer and long-time skygazer), and Jim Manning (of the Space Telescope Science Institute, himself an amateur astronomer as well as being head of Public Outreach at STScI) all nodding our heads when Rob asked the question that must have occurred to all of us simultaneously.

I should also say that the press types who come to the AAS meetings are all very experienced science writers, with more than a few graduate degrees amongst us. There are usually 3-4 press conferences per day, and when we’re not in PR events, we’re out at the paper sessions and visiting the exhibit hall (which is alive with spacecraft, mission, book seller, and astronomy product sellers as well as poster papers relating to astronomy. In this meeting we also had poster papers from astronomy educators attending the American Association of Physics Teachers meeting held jointly with AAS.

I’ll probably be posting a few more stories from the AAS in the next weeks. I have a few dozen press releases to mine for cool stories!

Exploring Science and the Cosmos

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