Bioscanner
Bioscanning is a ability available to the Brynhild, Pawn, and Cobol starships. These ships can pick up native life (or lack thereof) and temperature on planets not already owned by the bioscanner's owner.
The range of bioscanning is the same as sensor sweep's range, which defaults to 200 lightyears.
The Brynhild and Cobol will lock onto and attempt to scan about 20% of the planets within range. The Pawn possess an advanced bioscanner, which is capable of scanning all planets within range. An example report is shown below from Planets 3.
<<< BIO SCANNER >>> FROM: Brynhild scanner ID # 146 Bio Scanners show Reptilian On : Cephei 198 Planet ID# 198 Sensors show 1013500 lifeforms Climate = 23
Bioscanning does not tell you which race, if any, owns the planet. Twenty or more defense outposts will shield a planet from bioscanning.
The Evil Empire is able to fake bio scan reports: whatever type of natives are living on the planet, they will be reported as Amorphous. However, this ability does not affect bioscanners belonging to the Rebels. In any case, the amount of natives and the temperature will be reported correctly.
Bioscanning requires that the ship has at least 1kT of fuel, although no fuel is actually burned.