Saturn and Mars will be unusally close to Earth tonight, making your view of the stars on the deck of the Intrepid quite literally otherworldly. Amateur astronomers will guide your observation through eight telescopes of varying strengths, so look from the closest north star to the farthest visible planet. Also look for multimedia presentations and gratis tea and coffee. Make sure to R.S.V.P for a spot in advance.To R.S.V.P., e-mail firstname.lastname@example.org or call 646-381-5164. Bad weather cancels.