I found the following video on YouTube
https://www.youtube.com/watch?v=R8KlX2OFg-s
which discusses four space telescope designs being examined by NASA:
LUVOIR, similar to the Webb, but larger, and for visible light; an advanced X-Ray telescope; a telescope specifically designed to study exoplanets; and a far infrared telescope intended as a successor to the Webb.
John Savard
| Sysop: | Keyop |
|---|---|
| Location: | Huddersfield, West Yorkshire, UK |
| Users: | 715 |
| Nodes: | 16 (2 / 14) |
| Uptime: | 27:38:05 |
| Calls: | 12,106 |
| Calls today: | 6 |
| Files: | 15,006 |
| Messages: | 6,518,216 |