Chart the progress of NASA's tiny Lunar Prospector spacecraft, launched Jan. 6, as it orbits the moon, searches for water ice at the lunar poles, and measures the moon's magnetic field. You can also watch replays of press conferences on the year-long mission, check the health of the craft's suite of five instruments, and find out its current position. The Web site features what it describes as the world's largest source of information—past and present—about the moon.