extragalactic-astronomy
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Searching for Kardashev Type II and II Civilisations in Background Galaxies |
|
0 | 251 | 24 April 2023 |
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Searching for Kardashev Type II and II Civilisations in Background Galaxies |
|
0 | 251 | 24 April 2023 |