All Space Considered – September 2026
Griffith Observatory broadcasts this public program live from the Leonard Nimoy Event Horizon Theater on the third Thursday of every month. Join the Observatory's programming staff as they examine and explain the most-talked-about subjects in astronomy and space science. It is free to attend in-person or stream on YouTube.
Upcoming All Space Considered
Griffith Observatory broadcasts this public program live from the Leonard Nimoy Event Horizon Theater on the third Thursday of every month. It is free to attend in-person or stream on YouTube. Foundation members receive priority seating to All Space Considered, among other benefits. By joining the Foundation, you take part in supporting Observatory programs like this one.
To see previous All Space Considered programs, visit our YouTube playlist.
This Month's Headlines
- Space News
- Amazing Astrophotography
- Out to Launch
- Guest Segment with Dr. Katie Mack
Guest Speaker
DR. KATHERINE (KATIE) MACK is a theoretical astrophysicist who studies a range of questions in cosmology, the study of the universe from beginning to end. She currently holds the position of Hawking Chair in Cosmology and Science Communication at the Perimeter Institute for Theoretical Physics, where she carries out research on dark matter and the early universe and works to make physics more accessible to the general public. She is the author of the book “The End of Everything (Astrophysically Speaking)” and has written for a number of popular publications, such as Scientific American, Slate, BBC’s Science Focus, Sky & Telescope, and Cosmos Magazine.
YouTube Link