| 2020 | ||
| Sunday, September 20th | ||
|---|---|---|
| 9:30 AM |
From LEDs to Satellites: Ground-Based and Space-Based Challenges to Dark Skies Jeffrey C. Hall, Lowell Observatory 9:30 AM |
|
| 2020 | ||
| Sunday, September 20th | ||
|---|---|---|
| 9:30 AM |
From LEDs to Satellites: Ground-Based and Space-Based Challenges to Dark Skies Jeffrey C. Hall, Lowell Observatory 9:30 AM |
|