https://blog.blockstream.com/broadcasting-messages-in-space-with-lightning

Blockstream Satellite: Planetary Scale 📺

https://www.youtube.com/watch?v=DMdzvDjVR2w

bitcoin

Sending Encrypted Messages Over Satellite With Lightning 📺

cryptocoin

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