By Joey Roulette and Steve Gorman GREENBELT, Md. (Reuters) – NASA on Tuesday drew back the curtain on billions of years of cosmic evolution with the inaugural batch of photos from the largest, most powerful observatory ever launched to space, saying the luminous imagery showed the telescope exceeds expectations. The first full-color, high-resolution pictures from the James Webb Space Telescope, designed to peer farther than before with greater clarity to the dawn of the universe, were hailed by NASA as milestone marking a new era of astronomical exploration. Nearly two decades in the making an…