Friday, May 2, 6:15 p.m.
AAA Lecture (FREE) (P) (AMNH)
David Helfand, professor of astronomy and chair of the astronomy department at Columbia University, will discuss "Global Climate Change: What We Know and What We Don't Know" at the Kaufmann Theater of the AMNH. This is the last lecture of the AAA's 2007-08 lecture series. The 2008-09 series will begin in October.

Tuesday, May 6, Dusk to 10 p.m.
Stargazing, Cadman Plaza (FREE) (P) (T)
Observing in downtown Brooklyn. Next date: June 3.

Wednesday, May 7, 8 to 11 p.m.
Stargazing, Prospect Park (FREE) (P) (T)
Observing in Prospect Park. Enter at 9th Street and Prospect Park West. Next date: June 11.

Thursday, May 8, 6:30 to 8:30 p.m.
Recent Advances in Astronomy Seminar (M) (NYU)
Discussion of new findings in astronomy and astrophysics. The meeting will be held in Room 405 of the Kimmel Center of New York University, located at 60 Washington Square South. Next date: June 12.

Friday, May 9, 8 p.m. to 10 p.m.
Stargazing, Floyd Bennett Field (FREE) (P) (T)
Observing on the model airplane flying field. Next date: June 13.

Saturday, May 10, 7 p.m. to 11 p.m.
Stargazing, Riverside Park (FREE) (P) (T)
A special observing session, in conjunction with the Riverside Park Fund. The Moon will be passing through the Beehive star cluster this evening, and Mercury, Mars and Saturn will also be visible.

Saturday, May 10, Dusk
Stargazing, Great Kills Gateway National Park, Staten Island (FREE) (P) (T)
Observing on the model airplane flying field. Next date: June 7.

Saturday, May 10, 8 p.m.
Lecture, Custer Institute, Southold, NY (P)
George Redlinger of Brookhaven National Laboratory will discuss "Probing the Night Sky with the World's Most Powerful Microscope," on the Large Hadron Collider. $10 members; $13 non-members; $5 students. Info: Custerdonna@yahoo.com.

Monday, May 12, 7:30 p.m.
Hayden Planetarium Lecture (P) (AMNH) Sara Seager, Ellen Swallow Richards Associate Professor of Planetary Science and Associate Professor of Physics at MIT, will speak on "Extrasolar Planets and the Search for Habitable Worlds." $15 ($13.50 for members, students, senior citizens).

Wednesday, May 21, 6:30 p.m.
AAA Annual Meeting and Board Meeting (M) (HQ)
Dinner at 6:30, annual meeting at 7:30.  Eddie Oravec and Bob Little will be awarded the Amateur Astronomers Medal.  Discussion of events in the last year, financials, reports, tribute to Fred Hess, goals for next year, voting for board members.  The board of directors will meet following the annual meeting.

Friday, May 30, Dusk to 10 p.m.
Stargazing, Carl Schurz Park, Manhattan (P) (T)
Enter the park at 86th Street and East End Avenue and walk towards the river. Next date: June 27.

Friday, May 30 - Sunday, June 1
Star Party, Amateur Observers Society of New York (P)
Event will be at Stone Tavern Park in Delaware County, NY. Speakers, events for kids and adults. Info and registration: http://www.aosny.org/.

Saturday, May 31, 10 a.m. to Noon
Solar Observing, Central Park (P) (S)
At Conservatory Water. Next date: June 28.

Saturday, May 31, 1 to 4 p.m.
Observers Group (M) (HQ)
Observers' reports, discussion, announcements. Next date: June 28.

(M) for AAA members
(P) open to the public
(T) bring a telescope or binoculars if you have them, or just come by to have a look; canceled if cloudy
(S) solar observing -- like (T) but telescopes or binoculars you bring must be properly filtered; canceled if cloudy
(HQ) at AAA headquarters, 1010 Park Avenue, SW corner of East 85th Street
(AMNH) at the American Museum of Natural History -- for ticket information (not required for the AAA lecture) call 212-769-5200