Sky Tonight—March 21, As Mercury sets, zodiacal

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org After the sun sets, you can see the elusive planet Mercury – and the even more elusive zodiacal light – in the western sky. For those living in the northern hemisphere, this next week presents the best chance in all of 2011 to see Mercury, the solar system’s innermost planet. Meanwhile, if you have a very dark sky, the zodiacal light can be seen in the west about an hour after sunset through March and ... Full Story