Join the staff of the Dreyfuss Planetarium at Riker Hill Park (284 Beaufort Ave.) in Livingston, NJ. Telescopes will be set up for the public to see the Moon, Mars and the wonders of the spring sky. No reservations required; telescopes are provided for viewing. This event is co-sponsored by the Essex County Department of Parks. (Rain date: Saturday, March 20) FREE; All ages.