Leonid Meteor Shower 2017: What You Need to Know


This optical time-exposure image shows Leonid meteors as streaks contrasting with the curved tracks of star trails created by the Earth's rotation. DR. FRED ESPENAK/SCIENCE PHOTO LIBRARY/Getty Images
This optical time-exposure image shows Leonid meteors as streaks contrasting with the curved tracks of star trails created by the Earth's rotation. DR. FRED ESPENAK/SCIENCE PHOTO LIBRARY/Getty Images

From the vantage point of space, meteor showers are just trails of space trash, tiny bits of rock and ice left behind by comets as they race through the cosmos. But when our planet passed through those streams of junk as it revolves around the sun, the pieces of comet debris — some of them as small as a grain of sand — collide with the Earth's atmosphere and enter it. As they burn up, they create spectacular displays of natural fireworks in the nighttime sky.

The Leonid meteor shower of 1833 was particularly notable, producing tens of thousands of meteors (if not more) per minute, as shown in this illustration. This is extremely rare, and the Leonid shower generally produces about 10 to 15 visible meteors per hour.
The Leonid meteor shower of 1833 was particularly notable, producing tens of thousands of meteors (if not more) per minute, as shown in this illustration. This is extremely rare, and the Leonid shower generally produces about 10 to 15 visible meteors per hour.
Universal History Archive/UIG/Getty Images

We're about to have one of those memorable celestial events. The Leonid meteor shower, created as Earth passes through debris left by the comet Tempel-Tuttle, will appear in the skies from Monday, Nov. 5, to Sunday, Dec. 3, according to the American Meteor Society (AMS).

The peak this year is expected from midnight to dawn the mornings of Friday, Nov. 17, and Saturday, Nov. 18, according to astronomy website EarthSky. This year presents a particularly good time to view the Leonids, since the new moon will make the sky darker and the meteor bursts more prominent; the 2016 meteor shower took place around the full moon.

If you want to get the best look at the Leonids, prepare to wake up several hours before dawn. Pick a good location — ideally, someplace with a wide view of the sky, where there aren't a lot of brightly lit buildings and streetlights around — and give yourself about a half hour for your eyes to adjust to the darkness. It's easier to just rely upon your eyes instead of binoculars or a telescope, since those devices tend to limit your field of view and make it harder to spot the fast-moving objects.

Once you're in position, look in the sky for the constellation Leo. The meteors will seem to come from the array of stars that make up the lion's mane. If the weather is clear, expect to see as many as 15 meteors per hour, according to AMS.

According to Space.com, Leonid meteors typically start burning up when they're 87 miles (140 kilometers) above the Earth's surface, and they disintegrate long before hitting the ground.



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