A Good Celestial Show Gets Better May 10, 2002 Artist's concept of planetary alignment The Moon will join five visible planets to perform a seldom-seen celestial show on the evening of May 13. To see the conjunction of the planets and moon, look in the western sky above the horizon just after sunset. Look for Venus, the brightest star in the group. Red Mars will be right below, and Jupiter, which appears white, will be topmost. Mercury is closest to the horizon, and Saturn is just below Mars. "You'll see just a sliver of the Moon,...