One of the five top meteor events of 2013 peaks the night of April 21/22. Although the Lyrid shower doesn’t get as much recognition as some summer and autumn showers do, it often puts on a nice display. In a great year, observers can expect to see up to 20 “shooting stars” per hour — an average of one every three minutes — at the peak.
Unfortunately, conditions won’t be ideal this year. According to Astronomy
magazine Senior Editor Michael E. Bakich, “An 85-percent-lit Moon will share the sky with this meteor shower until close to dawn. The bright moonlight will drown out some faint meteors and render the bright ones a little less impressive.”
Still, observers will have a narrow window with dark skies. At mid-northern latitudes, the Moon sets around 4 a.m. local daylight time and morning twilight doesn’t begin until a half-hour later. Skygazers can open that window wider by finding a spot where a building, tree, or low hill blocks the Moon from view and darkens the sky. Also try to observe from a rural location, where the lights of the city won’t add to our satellite’s glow.
Lyrid meteors begin as tiny specks of dust that hit Earth’s atmosphere at high speeds, vaporizing from friction with the air and leaving behind streaks of light. The meteors appear to radiate from the constellation Lyra the Harp
, near the bright star Vega, which rises in late evening and passes nearly overhead shortly before dawn.
With the Moon hanging low in the west before 4 a.m., your best bet for seeing meteors is to scan the eastern sky. Once the Moon sets, look about two-thirds of the way from the horizon to the zenith (the point directly overhead) in any direction. Don’t get tunnel vision. If you let your eyes wander, peripheral vision can pick up meteors you otherwise might not see. Another no-no — don’t stare directly at the radiant. Although you can trace all of a shower’s meteors back to Lyra, any meteor you see there will be just a point of light. All other things being equal, the farther away from the radiant a meteor streaks, the longer its trail will be.
April mornings can be chilly and you won’t be active, so bring along warm clothes and a blanket. Have some hot coffee, tea, or soup to ward off the chill. And plan to recline in a lawn chair or lie down on an air mattress — sitting up straight or standing for long periods will wear you down.