Two big sky events will be worth checking out during the next few weeks, including an impressive October meteor shower that is expected to reach its peak this week and a lunar eclipse that will turn the full moon into a rusty-orange color in early November. The Orionid meteor shower is already active, but experts say it will be at its best late Thursday night, Oct. 20, into early Friday morning, Oct. 21, with 10 to 20 meteors shooting across the sky each hour in dark locations. The October moon will help make this meteor shower more visible than usual, because it will be only 25% full on Thurs…