Event
Colloquium: Twenty-five Years of Science with Chandra
Hans Moritz Guenther (MIT Kavli Institute for Astrophysics and Space Research)

Chandra is one of NASA's "great observatories" and was launched in 1999. In this talk, I will review Chandra's history and instruments and show highlights from an absolutely astonishing 25 years of science observations.
A "30 ft orbiting X-ray telescope" was first proposed by Riccardo Giacconi in the 1960's, and today's Chandra grew out of that idea. I will describe the mirrors, instruments, and technologies in Chandra and show how it was put together and launched into orbit. Chandra has looked at a vast range of objects in the last 25 years, and I will highlight and explain
just a few of them: quasars, jets, supermassive black holes, galaxy clusters, supernova remnants, stars, star forming regions, planets, and comets. I will show some examples of how we deal with the challenges of operating a aging observatory. Unfortunately, Chandra's funding environment is uncertain, but I will provide an update on NASA's current funding promises and plans.