It’s not light. It’s not dark. It’s that special time called twilight and HRPO wants to introduce you to it! Are all sections of the sky the same shade of blue? Which stars are seen first? Are Mercury and Venus or the Moon out? Is that moving object a plane, a weather balloon, a satellite or debris in outer space? How much actual darkness should be expected in cities of a certain population? There is no other time like twilight. Bring it into your life! [For ages six and older. No admission fee.]