If you were outside this morning before sunrise, and happened to have a clear sky, you may have seen the old gibbous moon, well up in the south. You may have also seen three stars nearby the moon; but only the bottom-most star is actually a star: it’s the red giant Antares, which marks the heart of Scorpius. Just above Antares is another red-tinged star, but that’s not a star at all – it’s Mars. You can see how Antares got its name when you compare it to Mars – they look a lot alike, especially in color. Antares means, “rival of Ares,” the Greek name for Mars.