::I'm not sure what ''deducta'' is doing here.
:::It was supposed to mean "launched", i.e. "Voyager II is an automatic spacecraft launched August 20th..." Lewis and Short says "deducere navis" = "to launch a ship". Is it the grammar of the phrase that confuses you?
::I don't find any examples of cosmos in the plural used like that (I could be wrong).
:::What word would you suggest for outer space outside of the solar system? Do we have an agreement on a term for "outerspace"?