An unusually robust meteor shower
is set to peak later
this week, and NASA scientists have a few tips on how to watch it.
The Perseid meteor shower
began on July 17 and will continue until Aug. 24, but it will peak
sometime in the early morning hours of Aug. 12.
The Perseids are tiny pieces of debris
and dust that have broken off
from the Swift-Tuttle comet
, which orbits
the sun every 133 years. As Earth moves through space, it hits this dust, and the debris descend
into Earth's atmosphere, burn up and leave the dashes of light
some call "shooting stars."
The Perseid shower — named because the meteors seem to fly out from the constellation
named Perseus — happens every August. During a typical shower, a skygazer
can expect to see
about 100 meteors per hour.
However, forecasters
"are predicting a Perseid outburst
this year with double normal rates on the night of Aug. 11-12," said Bill Cooke with NASA's Meteoroid Environment Office in Huntsville, Alabama, in a news release. "Under perfect conditions, rates could soar
to 200 meteors per hour."
There are a few caveats
here. First, conditions are rarely perfect
: Everything from light pollution
to the glow of the moon can obscure the stars. And night skies
in American cities are increasingly filled with enough light to cloud
the view.
The best way to see the show is to go outside around midnight, or shortly after, in a location with as dark a sky as possible. The moon should set between midnight and 1:00 a.m., depending on location. In New York City, moonset occurs at 12:53 a.m. ET on Aug. 12, so arriving shortly after midnight will allow eyes the recommended 45 minutes to adjust to the darkness.
If traveling to a place with sufficiently dark skies is untenable
, NASA will broadcast the shower on Ustream.
Those who can't see the show can still marvel at
this thought: "The meteors you'll see this year are from comet flybys
that occurred hundreds if not thousands of years ago," said Cooke in the release. "And they've traveled billions of miles before their kamikaze
run into Earth's atmosphere."
https://www.yahoo.com/news/see-perseid-meteor-shower-peaks-155902227.html?nhp=1