HRD is about a century old collected data.
How do we know about the stars without
the time required?
The Hubble sphere would be an assumption
because it is beyond observation...
| Sysop: | Keyop |
|---|---|
| Location: | Huddersfield, West Yorkshire, UK |
| Users: | 475 |
| Nodes: | 16 (3 / 13) |
| Uptime: | 147:19:02 |
| Calls: | 9,477 |
| Calls today: | 8 |
| Files: | 13,610 |
| Messages: | 6,120,733 |