Category Archives: astronomy

JWST C 2007 (Carolyn Collins Petersen)
JWST (© 2007 Carolyn Collins Petersen)

Tonight we saw one of the biggest of the future orbiting astronomy telescopes laid out before our eyes. It’s an observatory we’ve all known is coming for a long time—the James Webb Space Telescope, set for launch in about seven years. The Northrup Grumman people (who are the prime contractors) gave a symposium tonight, presenting the science we’ll be able to do with the JWST, and also a little peek at how the fabrication is going.

What’s really cool is that they brought a full scale model of the telescope and set it up in a courtyard outside the convention center. I remember back in 1988, when I was first back in school, preparing for grad school, and working on the CU half of the Goddard High Resolution Spectograph team and being majorly impressed with the Hubble Space Telescope and its future capabilities. Tonight I got a rush of that same feeling, and I can’t WAIT to see what this telecope will do. If you want to learn more about this infrared-optimized telescope that will orbit at a LaGrange point and reach its gaze out to the earliest epochs of time in the cosmos, check out their James Webb Web Site.

So, what else did we hear about today?

For one thing, the first triple quasar ever discovered was presented this morning at an early press conference and then later in a paper session. The chief scientist on this venture was George Djorgovski, a professor at Caltech, and the fellow who led the team that produced the Big Picture” showcased at Griffith Observatory. I worked with George long-distance while writing the captions for the exhibits, but we’d never met in person until today.

Also presented today was a paper on discoveries of quasars in the Zone of Avoidance, a region of the sky that is “covered” by the plane of the Milky Way. It’s traditionally been hard to observe through the Milky Way, but now tradition has been cast aside by a team of Korean astronomers who observed the ZOA and searched out radio or near-infrared signals from quasars through all the interference from our own galaxy. You can read their press release and see figures by downloading files from their site.

HST and starbirth region in the LMC
HST and starbirth region in the LMC

Cornell University announced that a group of observers using the Arecibo Radio Telescope in Puerto Rico discovered some unusual blasts of radiation from the Crab Nebula and its embedded pulsar. Arecibo is threatened with closure, even though it is doing amazing and productive science. It seems that the review committee that is recommending shutdown isn’t aware of the contributions this dish is making, and so the story about the Crab Nebula is getting some traction here.

Finally, Hubble Space Telescope released a stunning image of a region of hot young stars that have carved out space in their birth clouds in the Small Magellanic Cloud. You can read more about this image here.

These are just a few of the many topics discussed today—astronomy information is pouring out like water from a firehose. It’s just amazing! Tune in tomorrow for more!

AAS-Seattle

The Home Game

want to try a little experiment with everybody who’s reading along at home as I (and others) have our fun at the AAS meeting. Ever since I was in grad school (lo, these many years ago), I’ve been indulging in a little learning project that involves science press releases and news media stories. It all started when I was analyzing more than five years of Hubble Space Telescope-related stories for my graduate thesis (titled Media Treatment of Hubble Space Telescope, published in 1996, University of Colorado). I noticed a distinct disparity between the stories I was reading in the press releases coming from scientists and their institutions and the stories that were actually getting written up in the paper. For HST, at least, it was a disparity that put HST in a bad light for the first year or so after the discovery of spherical aberration in the main mirror. Gradually things changed, which I noted in my thesis. It was gratifying after I graduated to have folks at NASA and the Space Telescope Science Institute ask for my thesis so they could have my viewpoint on the issue.

Anyway, in fall of 1996, I devised a little lesson plan that I have put into effect in workshops and education sessions ever since. In it, I have people look at press releases about astronomy events and discoveries, and then I have them search out the corresponding stories in the media. I have them compare and contrast the “source material” (from the scientists) and the “outcomes” in the press. It’s a great exercise in critical thinking, and along the way it also teaches science. I’ve taught the lessons a number of times in workshops with planetarium folk, students, and teachers in the 11 years (11 years already!!!) since I graduated. There’s a conference proceedings coming out sometime this year from a presentation I gave about the technique, which outlines a full-blown four-week class I taught at Williams College last year, using college students, a planetarium, and some cool projects based on the technique.

In a sign that great minds think alike, I was talking with another blogger last night who told me she was just recently teaching a similar type of lesson with some of her astronomy students, too.

So, here’s the project for you guys reading out here in blogger land: I’m going to list some links of stories released on Sunday, January 7, here at the AAS, and it’s up to you guys to go read them, then search out the corresponding stories in the press to see how the “source” and “outcomes” match (or don’t).

HST and cosmic archaeology
HST and cosmic archaeology

First, there’s a great story on how Hubble and a series of ground-based observatories have participated in a survey of a small region of the sky in the southern hemisphere sky constellation of Sextans.

The image above shows the “cosmic archaeology” that the survey did to uncover dark matter and large-scale baryonic (normal matter) structures stretching back in time to a point about halfway between “now” and the beginning of the universe. Phil Plait has a wonderful discussion about it over on Bad Astronomy Blog. After you’ve read the press release information and Phil’s blog, then check out how the story shows up in the media.

If you’re feeling particularly frisky after that, check out some of these other stories we got press releases about today.

Discovering a Stellar Dynamo, a story that takes a look inside the dynamo powering a nearby star.

A polar?
A polar?

Calling Dr. Frankenstein! : Interactive Binaries Show Signs of Induced Hyperactivity, about highly energetic binary stars called “polars.”

New Images of the Bubble Nebula and Barnard 163, taken from Kitt Peak.

NOAO Bubble Nebula Image
NOAO Bubble Nebula Image

<Cosmic Menages A Trois: Astronomers Find Triple Interactions of Supermassive Black Holes in the Early Universe.

Astronomers Detect Black Hole in Tiny ‘Dwarf’ Galaxy.

Hubble Observations Provide Insight into Planet Birth.

HST and planet birth
HST and planet birth

Happy reading! Let me know what you find as you compare and contrast the stories that DO show up in the media about any of these!