| Title | : | Carl Sagan Christmas Lecture 1 - The Earth as a Planet |
| Duration | : | 59 minutes, 49 seconds |
| Uploader | : | carlsagandotcom |
| Added On: | : | 06 April, 2022 |
| Views | : | 162.6K times |
| Likes | : | 0 |
| Source | : | YouTube |
In his first Christmas Lecture, American astronomer and cosmologist Carl Sagan explores planet Earth and the place, scale and geometry of the 'pale blue dot' in the Solar System. Sagan provides a unique insight into the history of our knowledge of the thi
