Phoenix Astronomical Society

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PAS General Monthly Meeting with Guest Speaker in Room: LS-203
Calendar: PAS Public Event Calendar
Event Posted By: Terri Finch  
01-16-2020 07:00 PM to 10:00 PM

Tonight's meeting features: John Barentine
Topic: “Follow the Gas: How Atoms and Molecules Build Stars, Galaxies and the Structure of the Universe”
Data about this meeting: ...
Bring a friend and your family members and enjoy a great presentation. Everyone welcome. Hope to see you there!

The Date of the January 2020 Phoenix Astronomical Society meeting is Thursday January 16, 2020. The January meeting is later in the month because PVCC is not open at the beginning of the month.

Phoenix Astronomical Society

Meeting Thursday January 16, 2020

Speaker: John Barentine

Topic: “Follow the Gas: How Atoms and Molecules Build Stars, Galaxies and the Structure of the Universe”

The story of a typical spiral galaxy like the Milky Way is a tale of the transformation of hydrogen gas to heavier elements through nuclear burning in stars. This gas is thought to arrive in both early times during the assembly of a galaxy and at late times through a combination of hot and cold “flows” representing external processes that continue to the present. Hydrogen is converted to molecules that collect into clouds, cool, condense, and form stars; at the end of these stars’ lives, much of their gas is returned to the galaxy to participate in later generations of star formation. Interactions between galaxies bring more gas to fuel star formation, but the expanding universe continues to carry galaxies further apart making future interactions rare. Then slow, internal processes take over in galaxies, where gas (and the stars it makes) continue to determine their structures. In this presentation, I will take the audience on a multi-billion-year journey from the Big Bang to the distant future, noting how some of the tiniest constituents of nature — atoms — shape much of the universe we see around us.

John Barentine is the Director of Public Policy for the International Dark-Sky Association (IDA). He earned a Ph.D. in astronomy from the University of Texas at Austin, and previously held staff positions at the National Solar Observatory, Apache Point Observatory, and the Sloan Digital Sky Survey. Throughout his career, he has been involved in education and outreach efforts to help increase the public understanding of science. In addition to his work for IDA, he is a founding member of the University of Utah Consortium for Dark Sky Studies, serves on light pollution committees of both the American Astronomical Society and the International Astronomical Union, and is a Fellow of the Royal Astronomical Society. John is the author of two books on the history of astronomy, The Lost Constellations and Uncharted Constellations. The asteroid (14505) Barentine is named in his honor. His interests outside of astronomy and light pollution research include history, art and architecture, politics, law and current events.

Terri, Event Manager adds: John will be doing a book signing of his books at the meeting. However, he doesn’t have that many hard copies to sell in person and asks that you purchase his book on Amazon, and bring it along to be signed. He will have a few copies for sale at the meeting.

The meeting location is:

Paradise Valley Community College

18401 North 32nd Street

Phoenix, AZ 85032

Life Sciences Building room LS-203

Meeting starts at 7:30 PM

PAS Meetings are on the First Thursday of each month, Sept to May, unless otherwise noted. The January Meeting isn't on the first Thursday because PVCC is closed for the holidays and doesn't reopen until 2 weeks into the new year. And PAS doesn't hold Summer General Meetings at PVCC because the campus is closed or not available during the summer months – June, July & August.

Bring a Friend!!! Bring the whole family! EVERYONE WELCOME![/b]

Here's the campus map.

Paradise Valley Comm. College
18401 N. 32nd St
Phoenix, AZ 85032
Union Hills and 32nd St.

Meeting gathers at 7pm for Socializing, setting up the Guest Speaker, taking care of the Raffles, gathering Announcements, & snacking.

7:30 Meeting begins with a few brief announcements and then
we turn it over to the Guest Speaker. When the guest speaker concludes, there may be the raffle drawing & any announcements that didn't get covered prior to the start of the Guest Speaker's presentation.

Most meetings have snacks and drinks available. Donations are accepted, but not required. Bring a snack to share or donate to the snack fund. The snack fund sometimes provides the case of water each month and the pizza for the Annual Awards Ceremony & pizza party in April.

The group sometimes goes to Village Inn at Bell & 40th Street - 4040 East Bell Road, Phoenix, AZ 85032 for evening snacks after the meetings. Please see the President or Vice President at the meeting to find out if there will be a a group trip to Village Inn after the meeting.

We also, sometimes, take the Guest Speaker to dinner prior to the meeting. A separate Calendar listing will be posted to collect RSVP's for attendance. Locations vary, check calendar for locations. Please always RSVP by the day before to be included in Dinner. Dinner is a Buy Your Own. Everyone is welcome.

See you there!

Guest Speaker Line-up can be found in the Left hand column navigation bar on the main PAS webpage under "PAS Meetings" or at this link:
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