Halley's comet swings near Earth every 75 years. But debris left by the comet leads to two major meteor showers every year including the .
When this meteor shower lights up the night sky, 鈥測ou'll know that Earth is crossing the path of the most ,鈥� said Shauna Edson of the Smithsonian's National Air and Space Museum.
The Eta Aquarids are 鈥減retty fast meteors鈥� said NASA's Bill Cooke.
During Tuesday morning鈥檚 peak, expect to see 10 to 15 meteors per hour in ideal viewing conditions, said Cooke.
However, the moon will be nearly two-thirds full, which will likely reduce visibility.
Viewing lasts until May 28. Here鈥檚 what to know about the Eta Aquarids and other .
What is a meteor shower?
As the Earth orbits the sun, several times a year it passes through debris left by passing comets and sometimes asteroids. The source of the Eta Aquarids is debris from Halley's comet.
When these fast-moving space rocks enter Earth鈥檚 atmosphere, the debris encounters new resistance from the air and becomes very hot, eventually burning up.
Sometimes the surrounding air glows briefly, leaving behind a fiery tail 鈥� the end of a 鈥渟hooting star.鈥�
You don鈥檛 need special equipment to see the various meteor showers that flash across annually, just a spot away from city lights.
How to view a meteor shower
The best time to watch a meteor shower is in the early predawn hours when the moon is low in the sky.
Competing sources of light 鈥� such as a bright moon or artificial glow 鈥� are the main obstacles to a clear view of meteors. Cloudless nights when the moon wanes smallest are optimal viewing opportunities.
And keep looking up, not down. Your eyes will be better adapted to spot shooting stars if you aren鈥檛 checking your phone.
When is the next meteor shower?
The next major meteor shower, the Southern Delta Aquarids, peaks in late July.
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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute鈥檚 Science and Educational Media Group. The AP is solely responsible for all content.
Christina Larson, The Associated Press
