The year’s meteor showers begin with Lyrids, named for Lyra, the harp constellation. Fog permitting, they will appear between April 16 and 25, peaking overnight on April 21 at about 20 an hour. Look to the eastern sky after midnight. The Lyrids overlap with the Eta Aquarids, which run from April 15 to May 27. The full moon rises on April 23. Colonial Americans called it the “planters’ moon,” referring to the time when crops…