Every planet, asteroid, comet, and nebula has to be scanned and analysed. You never know in a few dozen years when a hunk of aluminium the size of Pluto might be needed in this sector.
Most of it is automated obviously, bot driven crafts that call in anything they don't understand. Then it's my job to go take a look.
Up until now, it's all been just malfunctioning scanning equipment.
And on some level, I admire the ability of a creature living on an asteriod to hack a bot to call in like that. But I still don't understand it...