ORLANDO, Fla. — The Geminids — among the few major meteor showers to come from asteroids — peak on Friday. It’s one of the year’s last chances to see fireballs in the sky.
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The shower often produces meteors with a distinctly yellow glow, likely due to the unusual origin material, said Sally Brummel, planetarium manager at the University of Minnesota’s Bell Museum.
Under ideal viewing conditions, the Geminids typically put on one of the best and brightest shows of the year because of the high volume of meteors visible each hour. However, this year, an almost full moon means up to 15 meteors per hour are expected at peak time, according to the American Meteor Society.
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The moonlight “will wash out a lot of them,” Brummel said.
Viewing lasts until Dec. 21. Here’s what to know about the Geminids and other meteor showers.
What is a meteor shower?
Multiple meteor showers occur annually, and you don’t need special equipment to see them.
Most meteor showers originate from the debris of comets, but a few — including the Geminids — result from the debris of asteroids. The Geminids come from the sun-orbiting asteroid 3200 Phaethon.
When rocks from space enter Earth’s 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 — the end of a “shooting star.”
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 rocky nature of asteroid debris makes the Geminids especially likely to produce fireballs, said NASA’s William Cooke. “Those are pretty tough rocks that can penetrate deep into the atmosphere,” he said.
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How to view a meteor shower
Meteor showers are usually most visible between midnight and pre-dawn hours, however, tonight they can be seen between 9-10 p.m.
It’s 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.
And your eyes will better adapt to seeing meteors if you aren’t checking your phone.
When is the next meteor shower?
The next meteor shower, the Ursids, will peak on Dec. 22.
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