COMETS A comet sailing through the inner solar system make its closest approach to the sun and will be at its brightest at sunset tonight, but the glare of twilight may make it tricky to see, NASA says. The Comet Pan-STARRS will be 28 million miles (45 million kilometers) from the surface of the sun when it swings around the star today, and should be bright enough to see without the aid of telescopes or binoculars, weather permitting. But the comet is also appearing low … [Read more...]