AMNH Frontiers Lecture: X-Ray Astronomy

Since its launch on July 23, 1999, the Chandra X-ray Observatory has been NASA’s flagship mission for X-ray astronomy. Now, more than 20 years later, Chandra is still helping scientists obtain images of remote environments to help understand the structure and evolution of the universe. David Helfand describes his work on X-ray observations of astronomical objects ranging from nearby stars to the most distant quasars.