Eva Nature
Eva Nature is a rare codex entry.
An informational 
datamass that briefly describes a rare occurrence of nature in the sky.
From the text it is clear that most of the flora found in eva is of cosmic origins, and boils down to alien lifeforms getting stuck in the clouds on their way down, surviving the fall.
Ingame
Species descriptions:
- Alta: I’ve yet to see it myself, but judging how specific the conditions are, I think I’m better off traveling to an arknight station for that.
Radiomessages on pickup:
- You’ve found an alta datamass. These tiny portable databases tend to contain important encrypted info used by alta crafting stations to unlock various blueprints.
These can either be crafted or found in random alta pods on alterash planets.
Usage
Crafting
Unlocks blueprints for:
Sources
Blueprint unlocked by obtaining:
Found naturally in containers:
Can be obtained from special items:
Can be obtained via 
Spawnable Item Pack or 
Technical Information
- In-game ID:
ct_eva-codex - Power:
1.0 - Rarity:
Rare - Tags:
data_source,datamass,eva,rare - File:
/codex/alta/ct_eva.codex