NASA’s Curiosity rover has transmitted its first color photo and a low-resolution video showing the last 2 1/2 minutes of its dramatic dive through the Martian atmosphere, giving a sneak peek of a spacecraft landing on another world. As thumbnails of the video flashed on a big screen on Monday, scientists and engineers at the NASA Jet Propulsion Laboratory let out “oohs” and “aahs.” The recording began with the protective…