Talk:Martian Saucer/@comment-27804965-20160416040914/@comment-30475135-20161121123815

Hostile NPC's don't spawn if there are town NPC's nearby. All the hostile mobs (including martian probes) will be replaced by bunnies, squirrels, birds, etc. Just watch out for solar eclipses and blood moons, because they negate the NPC's spawning effect, and martian probes will spawn during blood moons and solar eclipses. So, basically, you're safe in the sky as long as  there are no blood moons or solar eclipses. If there are, drop down and fight, of go underground if you don't want to fight them.