ESA is one of the largest space agencies in the world. There’s nothing opaque about calling it ESA especially in a title. We wouldn’t use initialisms if everything had to be expanded all the time.
So is Roscosmos, but in such a situation, "Russia reconnects with lost spacecraft" would be the more accessible title
So is Roscosmos, but in such a situation, "Russia reconnects with lost spacecraft" would be the more accessible title