Aurora is on version 2.5.0 C#, available at the Aurora Forums.
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Salvage
Salvage gives the player the option of gathering resources and sometimes ship components from wrecked ships.
The research bonus from tech data from salvaged components is available only at the colony where it was downloaded to.
How to Salvage
Build a ship with Cargo components and at least one salvage module. Alternatively a ship with salvage module and a ship with Cargo hold can be in the same Task Group. Send the ship to a wreck with the "salvage" order selected from order menu. Ship should go and salvage anything worth salvaging on that wreck. The module's rating tells you how much wreck tonnage the module can recover per day. You'll get 10% of the wreck's tonnage in minerals.
Salvage Components
While salvaging a ship you have the chance to find components. Some of these components may be of a much higher technology level than your current tech. What you can do is take these components, already loaded in a cargo bay (on your salvage ship or accompanying ship) and unload them via unload all installations order. Then disassemble them in the "Stockpiles" menu, which can be found in the Industry tab of the population and production menu.
How to Disassemble
Once you return to a planet and the Unload all installations order is completed, go to the industry page. Click the Stockpile button in the top right of the Industry page. On that page you will see two buttons labelled "Scrap" and "Disassemble". Disassemble gives you a random chance to discover new technology from the wreckage.
Scrap will recover resources from the module. Do not scrap salvaged modules.