Griffith Observatory broadcasts this public program live from the Leonard Nimoy Event Horizon Theater generally on the third Thursday of every month. Join the Observatory's curatorial 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.

Griffith Observatory broadcasts this public program live from the Leonard Nimoy Event Horizon Theater generally on the third Thursday of every month. Join the Observatory's curatorial 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.

Griffith Observatory holds this public program online on the third Thursday of every month. Join the Observatory's curatorial staff as they examine and explain the most-talked-about subjects in astronomy and space science.

Griffith Observatory holds this public program online on the third Thursday of every month. Join the Observatory's curatorial staff as they examine and explain the most-talked-about subjects in astronomy and space science.

Griffith Observatory holds this public program online on the third Thursday of every month. Join the Observatory's curatorial staff as they examine and explain the most-talked-about subjects in astronomy and space science.

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 curatorial 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.