Read this passage. halley's comet is what's called a periodic comet. that's because it returns to the area around earth once every seventy-five years. halley's comet last appeared in 1986. the next time we'll have a chance to view it will be in 2061. how do you know that this passage uses objective language? the writer uses facts about the comet that can be proven. the writer lets the reader decide if the passage is based in fact or opinion. the writer adds adjectives that describe the comet. the writer offers opinions about the comet.