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Sunday night, December 13, the Geminid meteor shower will peak. It promises to be a great show, boasting about two meteors a minute. The best chance for viewing comes after the constellation Gemini rises. The display should last all evening, but heading outside around 9 p.m. is a good bet.

Here’s our guide to the shower.

Where To Look, And When

Head outside in the mid-evening on Sunday. The meteors from the Geminids have their origin point in Gemini, so you’re most likely to spot one if you have a clear view of that constellation. It rises in the east around 6 p.m. local time, and should be visible from just about anywhere on Earth. (Though in the southern hemisphere you’ll have to wait for sunset!)

Find a spot with a clear view of the eastern horizon, then look towards Gemini. It’s near the iconic constellation Orion, so if you can spot the three bright stars of his belt, that’s good enough. Here’s our finder chart:

chart showing constellations in the eastern sky during geminid meteor shower

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Gemini, the apparent origin point for the meteors, rises in the east at around 6 p.m. That’s the direction to look if you’re keen to spot a shooting star Sunday night. (This chart shows the constellations at 9:30 p.m. local time for the mid-latitudes of the northern hemisphere.)

Likely Awesomeness Rating: Very High

NASA is predicting an average of two meteors a minute over the course of the evening. Plus, the crescent moon will set at 7:30 (or thereabouts—earlier at higher latitudes, later at lower ones), so the sky will be nice and dark. Mix in the fact that Gemini rises in the early evening, and we’ve got a good, easy-to-watch shower in the offing.

Keep an eye on the likelihood of clouds in your area with this map from the National Weather Service. Mouse over “Sunday evening 7 p.m.” in the sky cover column to see—in the U.S., anyway—whether you can expect clear skies.

Why Now?

Mid-December is when the Earth passes through the debris field of an asteroid called 3200 Phaethon. Small bits of ice and rock litter the asteroid’s path. As the Earth crosses the debris field, it runs into the pieces—and they burn up as they fall into the atmosphere. (The pieces are so small it’s unlikely they’ll reach the ground.)

chart showing the earth's orbit around the sun and the debris that causes the geminid meteor shower

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As the Earth trundles around the sun, it passes through the debris left behind asteroid 3200 Phaethon in mid-December each year.

The Geminids are unusual: Most meteor showers are from comet debris, not asteroids. But 3200 Phaethon is an unusually icy asteroid, which also sweeps in closer to the sun than the planet Mercury. Since it orbits every 1.4 years, it passes through these parts pretty often. So it replenishes the shooting-star stuff regularly. And that’s a big part of why this shower promises to create such a show.

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