expansion

In astronomy, the redder a galaxy appears, the faster it is fleeing, and the older a tale its light can tell. Such "redshifts" in the spectra of galaxies (symbolized with the letter "z") allow compelling cosmic insights. The recently-launched James Webb Space Telescope (JWST) has allowed astronomers to study the properties of high-z galaxies in existence only 250 million years after the Big Bang, when the universe was only 2% of its current age! How are these objects detected in such very "deep" space, and what are the early science results from this JWST research?

Our speaker is Dr. Thomas Targett, Associate Professor of Physics & Astronomy at the Sonoma campus of California State University. Dr. Targett's Wonderfest history includes an eye-opening talk entitled Popular Myths of Astronomy, presented as part of the Mt. Tam Astronomy Program.