Tonight (and the next few) present a unique opportunity to catch two cosmic twins twins that are anything but twins, Mars and Antares. Mars is, of course, the 4th planet from the Sun and Antares is the alpha (brightest) star of the zodiac constellation of Scorpius. Interestingly enough, 'Antares' means 'rival of Mars' in Ancient Greek. The name obviously comes from its reddish appearance. To see the pair, look Southwest at dusk for two bright red 'stars,' the right one is the star and the left one is the planet.