December 2009

December 5: Monthly Meeting

The Day We Found the Universe

Marcia Bartusiak
The December meeting and holiday party will be held on Saturday, December 5th at the North Scituate Community House. The festivities will begin at 7:00 pm. As we have done so enjoyably in the past, this will be a “potluck” style party, so we ask that everyone bring a favorite food item to share. We’ll supply coffee, hot chocolate, apple cider, and some pastry. Just let me know what food item you plan to bring so that our efforts will be coordinated and we don’t end up with too much of any one item. You can contact me via e-mail at stargazerbob@aol.com.

Combining her training as a journalist with a master’s degree in physics, Marcia Bartusiak has been covering the fields of astronomy and physics for three decades. She is currently a professor of science writing at the Massachusetts Institute of Technology and has published in a variety of publications, including Science, Smithsonian, Discover, National Geographic, Sky & Telescope, and Astronomy. She is the author of Thursday's Universe, a guide to the frontiers of astrophysics; Through a Universe Darkly, a history of astronomers' quest to discover the universe's composition; and Einstein’s Unfinished Symphony, a chronicle of the international attempt to detect cosmic gravity waves. All three were named notable books by the New York Times. She went on to write Archives of the Universe, an anthology and commentary on the historic discovery papers in astronomy, and most recently The Day We Found the Universe, on the birth of modern cosmology. Bartusiak is a two-time winner of the American Institute of Physics Science Writing Award and in 2006 garnered the AIP’s prestigious Gemant Award for her “significant contributions to the cultural, artistic, or humanistic dimension of physics.” In 2008 Bartusiak was elected a Fellow of the American Association for the Advancement of Science, cited for “exceptionally clear communication of the rich history, the intricate nature, and the modern practice of astronomy to the public at large.” Bartusiak lives with her husband, mathematician Steve Lowe, and their dog Hubble in a suburb of Boston.

The Day We Found the Universe: A dramatic narrative of the discovery of the true nature and startling size of the universe, delving back past the moment of revelation to trace the decades of work—by a select group of scientists—that made it possible. On January 1, 1925, thirty-five-year-old Edwin Hubble announced findings that ultimately established that our universe was a thousand trillion times larger than previously believed, filled with myriad galaxies like our own. It was a realization that reshaped how humans understood their place in the cosmos. Six years later, continuing research by Hubble and others forced Albert Einstein to renounce his own cosmic model and finally accept the astonishing fact that the universe was not immobile but instead expanding. The story of these interwoven discoveries includes battles of will, clever insights, and wrong turns made by the early investigators in this great twentieth-century pursuit. Here is the watershed moment in our cosmic history, splendidly arising from the exceptional combination of human curiosity, intelligence, and enterprise.

NOTE: Marcia will be available after the talk to sign her books. For those who do not already have a copy of her book(s), she will have some available for purchase at $20 per copy.
moon

2009 Geminid Meteor Shower Report

The sky was cloud free, and I easily had a limiting magnitude of at least 5.5 at zenith. Immediately I observed one, then two, then three meteors in rapid succession. Though I had dressed for the cold, it didn’t take long for me to get really chilled. Within about 10-15 minutes I had counted six Geminids.

2009 Leonids Observing Report

: By Dave Huestis
One Leonid of about 1st magnitude appeared to the east of Betelgeuse, leaving a two second train of dust behind it. Not bad. Much later a bright Leonid, perhaps as bright as Jupiter, shot about 15 degrees to the west of Sirius. I saw it disappear below my tree line to the south. These were the highlights.

Ursid Meteor Shower

: By Glenn Chaple
Discovered a little over a century ago, the Ursids are associated with the comet P8/Tuttle. There are two reasons why this meteor shower is so little observed. For one thing, it’s rather sparse. Although there have been reports of short outbursts of 100 Ursids per hour, the hourly rate rarely reaches double figures. Couple that with the fact that the Ursids climax near the peak of the Holiday season on December 21-22.

An Early Holiday Gift from the Sky Gods

: By Dave Huestis
December can be quite snowy and cold around southern New England. But I’m hoping Mother Nature will cooperate and allow stargazers to observe the most reliable and consistent meteor shower the Earth encounters on its year-long journey around our Sun. That shower of shooting stars, called the Geminids, peaks this month on the night of December 13-14 (a Sunday night to Monday morning). And all the conditions are ideal for observing them this year, provided the skies are clear.

Avoiding the “Trash Scope” Trap

: By Craig Cortis
This is intended for readers who might not feel knowledgeable enough to make a wise purchase of a first-time telescope, or who are considering buying a scope as a gift for another person, particularly a child. We give gifts at other times of the year, of course, but Christmas is probably the biggest occasion for astronomy-related gift purchases. This is also the season when you’ll see the most ads or merchandise displayed in stores that carry optical equipment.

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