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=Welcome to Astronomy 851/852=

//__Announcements __//


 * Mr. V has to report for jury duty Monday, March 21st. Classes will be canceled for the day.

__**Observatory Schedules**__


 * Harvard Center for Astrophysics**

• [|Monthly Observatory Night] Thursday, April 21, 2011, 7:30 pm: "Target: Earth," Timothy Spahr, CfA Our world is a cosmic bull's-eye for wandering asteroids. Small bits the size of sand grains create streaking meteors as they're harmlessly vaporized in our atmosphere. But Manhattan-sized "planet killers" threaten us with extinction. Timothy Spahr directs the Minor Planet Center -- the organization that collects asteroid observations and computes their orbits. He will discuss how far we've come in cataloguing asteroids throughout the solar system, and what steps we can take to avert disaster if we find one heading our way. Watch it live: [|RealPlayer] | [|Flash] Special Event Sunday, May 1, 2011, 12 noon - 4 pm: "Cambridge Explores the Universe" Become an astronomer for a day! Enjoy telescope tours, interactive multimedia exhibits, hands-on activities, and live demonstrations at this open house event. Hosted as part of the annual Cambridge Science Festival, "Cambridge Explores the Universe" invites space scientists of all ages to explore the wonder of the universe together in an out-of-this-world astronomy extravaganza!


 * Clay Observatory at the Dexter School (Brookline)**

• Open to the public on Tuesday evenings 6:30 – 8:30 p.m.


 * **Public Telescope Nights**The Clay Center Observatory is open one evening each week in the fall and spring terms for public astronomy viewing. Bring the entire family to look at the stars, planets, Moon, and more. Tour the Stars Court, lit by fiber optics, and walk among the classical constellations from 17th century drawings. Weigh yourself on the Moon and Mars with the Planetary Scales. (Weather permitting - see [|Public Astronomy web site] each week for details.) ||
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 * National Astronomy Day - May 14, 2011**Each spring the Clay Center teams up with the Amateur Telescope Makers of Boston to celebrate National Astronomy Day, a fun family-oriented festival of science. Join us for solar and night telescope viewing, planetarium shows, laser light shows, kite flying, model rocketry, guest lecturers including Galileo himself, and hands-on activities for all ages. See Astronomy Day web site for details. ||
 * National Astronomy Day - May 14, 2011**Each spring the Clay Center teams up with the Amateur Telescope Makers of Boston to celebrate National Astronomy Day, a fun family-oriented festival of science. Join us for solar and night telescope viewing, planetarium shows, laser light shows, kite flying, model rocketry, guest lecturers including Galileo himself, and hands-on activities for all ages. See Astronomy Day web site for details. ||




 * Coit Observatory at Boston University**

• The Public Open Night at the Observatory is held on clear Wednesday nights from 8:30 – 9:30pm. Call 617-353-2630 for the status.

Unfortunately, there is no disabled access to the Observatory.