Also see this Layer2Roundup blog post, here on SN:

*Broadcasting Messages in Space with Lightning*
https://stacker.news/items/65885
https://blog.blockstream.com/broadcasting-messages-in-space-with-lightning

and also see this other video:

*Blockstream Satellite: Planetary Scale 📺*
https://stacker.news/items/65886
https://www.youtube.com/watch?v=DMdzvDjVR2w

cryptocoin

There's also this guide from Blockstream on this:

How do I broadcast a message over the Blockstream Satellite network?

https://help.blockstream.com/hc/en-us/articles/900002237143-How-do-I-broadcast-a-message-over-the-Blockstream-Satellite-network-

bitcoin

Sending Encrypted Messages Over Satellite With Lightning 📺

There's also this guide from Blockstream on this:

*How do I broadcast a message over the Blockstream Satellite network?*
https://help.blockstream.com/hc/en-us/articles/900002237143-How-do-I-broadcast-a-message-over-the-Blockstream-Satellite-network- 