Each month, I host the Public Lecture Series at the Space Telescope Science Institute in Baltimore, Maryland. Before introducing the main speaker, I present some Hubble discoveries and other astronomical findings and events called "News from the Universe".
The stories I covered for the March 7, 2017 lecture are:
-- The seven Earth-sized planets discovered around the red dwarf star TRAPPIST-1
-- The 30th anniversary of Supernova 1987A
Here are the description and links to the main speaker's presentation for the March 2017 Public Lecture Series:
The Composition of Galaxies: Looking Beyond the Stars
Lauren Corlies, Johns Hopkins University
Stunning visible light images of galaxies show us vast collections of stars, gas, and dust arrayed in great spiral and giant elliptical shapes. But astronomers know that there is much more to a galaxy than meets the eye. Their true scale reaches well beyond their visible extent and raises the question of whether a galaxy ever really ends. Dr. Corlies will discuss how we measure the faint outskirts of galaxies and whether the findings match our expectations. Through studies of Hubble Space Telescope observations and modern computer simulations we can probe the nature of galaxy formation and advance our understanding of their development.
- On the STScI webcasting page (speaker only): The Composition of Galaxies: Looking Beyond the Stars
- On the HubbleSiteChannel on YouTube (full event): The Composition of Galaxies: Looking Beyond the Stars
An archive of lecture webcasts back to 2005 is available at STScI Webcasting: STScI Public Lecture Series Archive.
Most lectures since spring 2014 are also in a HubbleSiteChannel YouTube playlist: STScI Public Lecture Series Playlist.