Before booty-shaking, before Frappuccino, before IMAX, before 24-hour gyms there was nothing to do after a long day of hunting and gathering but sit around and stare at the sky. If such simplicity makes you sigh, "Born too late," take heart. The Southern Cross Astronomical Society wants to tweak your inner Galileo. Saturdays between 8:00 and 10:00 p.m. the club sets up its high-tech telescopes at Bill Sadowski Park, a site so removed from city glare that even flashlights are banned as pernicious to the night-adjusted eye. Bring lawn chairs or blankets and a picnic dinner (no alcohol, please). Admission, Southern Cross expertise, and the stars are all free. Miami may be far from heaven, but that shouldn't stop us from looking.