5 planets will light up the September sky — here's how to see them

Venus, which has been such a prominent object in the western evening twilight sky since the start of spring, is now entering its final full month of visibility.With each passing day, it drops a bit lower in the southwest sky and sets a bit earlier and closer to the vicinity of the sun. By month’s end, making a Venus sighting will be rather difficult as it will be following the sun to below the horizon by only about 30 minutes.During the last week of September, Mercury pops up above the wes