David W. Latham is a Senior Astronomer at the Smithsonian Astrophysical Observatory in Cambridge. He is a co-investigator on the Kepler project which has discovered hundreds of exo-planets. He has led efforts to build telescopes at the Whipple Observatory in Arizona and also the instruments to go on them. His interests have ranged from quasars and galaxy redshift surveys to studies of stellar and planetary companions to stars. Recently his research has focussed on the discovery and characterization of transiting exoplanets, both from the ground and from space.
Jonothan MacDowell is an astrophysicist at the Chandra X-Ray Observatory. He carries out research into the history of the space program and writes an email-distributed newsletter, Jonathan’s Space Report . From 1993 to 2010 he wrote a monthly column for Sky and Telescope Magazine. He has also appeared on TV around the world pontificating on the latest goings-on in space and have now ventured into the podcastosphere. You can see him chat with Neil Tyson at the WGBH Forum, and some TV here, and on some CfA items
Eric Silver studies X-ray spectroscopy and polarimetry of laboratory and astrophysical plasmas at the Harvard Smithsonian Astronomical Observatory.