COLUMBIA ASTRONOMY OUTREACH PRESENTS:

STARGAZING & LECTURE SERIES

http://outreach.astro.columbia.edu

These are free lectures at a public level followed by guided stargazing with telescopes (weather permitting). All events are held at Pupin Hall at Columbia University. No reservations are needed.

Lectures are 30 minutes, stargazing lasts 90 minutes. Stay only as long as you want. For directions, weather updates and more information, please visit:

Light rays bend and trace the curvature of spacetime warped by the presence of masses. The result is analogous to the deflection and focusing of light by lenses. Learn how astronomers use this “gravitational lensing” to discover planets orbiting other stars, make a census of black holes floating in intergalactic space, study galaxies too faint to be observable with the largest telescopes, and map the expansion history of the universe. By revealing in detail the geometry of spacetime, gravitational lensing is also an invaluable tool to test our understanding of gravity.

José Manuel Zorrilla MatillaFriday, November 15th, 8:00PM

301 Pupin Hall, Columbia University

Spacetime Telescope