WASHINGTON (AP) 鈥 The Perseids are back to dazzle the sky with bursts of light and color.
The annual meteor shower, active since July, peaks before dawn Monday. It's one of the brightest and most easily viewed showers of the year, producing 鈥渂right blue meteors 鈥 and lots of them," said University of Warwick astronomer Don Pollacco.
More than 50 meteors per hour are expected, according to the . The shower lasts through Sept. 1.
Here鈥檚 what to know about the Perseids and other meteor showers.
What is a meteor shower?
Multiple meteor showers occur annually and you don鈥檛 need special equipment to see them.
Most meteor showers originate from the debris of comets. The source of the Perseids is the comet 109P/Swift-Tuttle.
When rocks from space enter Earth鈥檚 atmosphere, the resistance from the air makes them very hot. This causes the air to glow around them and briefly leaves a fiery tail behind them 鈥 the end of a 鈥渟hooting star.鈥
The glowing pockets of air around fast-moving space rocks, ranging from the size of a dust particle to a boulder, may be visible in the night sky.
The Perseids result from 鈥渂igger particles than a lot of other showers,鈥 said NASA鈥檚 Bill Cooke, giving them the appearance of 鈥渂right fireballs鈥 鈥 easier to spot than many others.
How to view a meteor shower
Meteor showers are usually most visible between midnight and predawn hours.
It鈥檚 easier to see shooting stars under dark skies, away from city lights. Meteor showers also appear brightest on cloudless nights when the moon wanes smallest.
The Northern Hemisphere will have the best view of the Perseids. This year's peak coincides with a moon around 44% full.
When is the next meteor shower?
The meteor society keeps a list of upcoming large meteor showers, including the peak viewing days and moonlight conditions.
The next major meteor shower will be the Orionids, peaking in mid-October.
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