First Light: Hunting for Galaxies at the Dawn of Cosmic Time

Guido Roberts-Borsani, UCLA
The emergence of the first galaxies some 13.5 billion years ago had a profound effect on the state of the universe. It marks the end of the so-called "Dark Ages" and begins the Epoch of Reionization. Finding and characterizing the distant sources responsible for ionizing the intergalactic medium is imperative to answer questions such as: When did the first galaxies form? Did they have upermassive black holes? What kind of stars did they host?
Dr. Roberts-Borsani will discuss how astronomers are pushing the limits of current observatories to hunt for these initial galaxies and describe the efforts to characterize their exceptional natures. He will also illustrate how first results from the James Webb Space Telescope are already revolutionizing our search and providing an unprecedented window into early galaxy evolution.
- News from the Universe starts at 3:27
- Main talk starts at 15:34
Host: Frank Summers, Space Telescope Science Institute
Recorded live on Tuesday, September 6, 2022
More information: www.stsci.edu/public-lectures

[@HebaruSan]

It's great to see all the fun astronomers are having with their awesome new toy :)

[@BigFatHeretic]

Excellent podcast! I love Mr Hubble and Mr Webb! My two favorite telescopes! Looking forward for more. Keep up the good work!

[@alfredtetzlaf9163]

Thank you for taking care of jwt; pls continue/take over.

[@dennistafeltennis1190]

Hello there

[@tullyfisher]

Awesome talk/ public lecture. Very interesting, as always! - Unfortunately, some weeks ago you shifted the time of the YT livestream to some time I (and many others not living in the US) can not join. So we can also not ask questions. This is VERY unfortunate. Would be nice to shift it back to a more reasonable time. - Thanks & clear skies (when not having a HST or JWST ;-).

[@hubblespacetelescope]

Thank you! We love that people like you make it possible for us to continue doing them.