Montauk Observatory Logo












Lecture: The Search for Planet Nine

presented by William Francis Taylor, NASA Solar System Ambassador

7:00 PM Thursday, May 10, 2018
John Jermain Memorial Library
201 Main Street, Sag Harbor, NY 11963


Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune...these are the 8 official planets of the solar system. Distant Pluto, once considered the 9th planet, was relegated to a new category: “Trans-Neptunian Objects” or TNOs. Many other TNOs similar to Pluto (such as Eris, Makemake, Sedna, and Quaoar) were discovered brimming on the edge on the known solar system. As the number of TNOs grew, astronomers made a curious discovery: most of their orbits were clustered in ways that seemed difficult to ascribe to pure chance. Could their odd behavior be the result of an unseen but massive new planet, to Planet Nine? NASA Solar System Ambassador, William Francis Taylor, will discuss the search for Planet Nine and planetary discovery.

Weather permitting, after the lecture William Francis Taylor will set up a telescope and give guided tours of the night sky.

Reservations are required. Call the library at (631) 725-0049.

The lecture and observing session are FREE, although donations to help support Montauk Observatory are greatly appreciated. To make a tax-deductible donation through Paypal, just click on "Donations" on our home page.

Montauk Observatory would like to thank the John Jermain Memorial Library for co-sponsoring this event.

Back to event listings
Montauk Observatory Logo

Science News