Earthsky Tonight — April 8, Mercury at greatest

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Mercury – the solar system’s innermost planet – goes unnoticed by most people, because it’s so often obscured by the sun’s glare. Even when Mercury is visible – like it is now – it takes a deliberate effort to catch this rather elusive world. This evening, Mercury reaches its greatest angular distance east of the sun. What this means is that Mercury sets a maximum time after sunset today, enabling you to spot ... Full Story