This is one of the most active meteor showers of the year and is also one of the easiest to observe.
Meteors will be visible beginning 8 p.m., but they will be more prominent past midnight and will last until 5 a.m. Friday.
Geminid Meteor Shower 2018: Where will it be visible?
For a little help spotting comet Wirtanen, NASA offers the handy skymap below to look for the glowing green ball of light, likely located a little higher in the sky than the star Aldebaran near the constellation of Taurus the bull.
Clear skies are essential for optimum viewing, so keep an eye on the weather before heading out.
Then, find the darkest place you can, and give your eyes about 30 minutes to adjust to the darkness, which means not looking at your cell phone for 30 whole minutes, because it will mess up your night vision.
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The Geminid Meteor Shower will be visible only in clear dark sky at midnight on the nights of December 13 and 14. Space.com columnist Joe Rao agreed, citing in his column the nice timing of this year's Geminids: the crescent moon will set around 10:30 p.m. local time and will not interfere with any brilliant meteors.
Every December, Earth's orbit leads us through the trail of 3200 Phaethon and its debris crashes into our atmosphere at 127,000 kms per hour. The radiant-the point in the sky from which the meteors will appear to stream-lies in the constellation Gemini near the star Castor.
While you may see some Geminids after sunset, the best time to watch for them is in the hours just before dawn on Friday. Stargazers can expect to spot dozens of meteors an hour, according to NASA, as long as you're in an area free of light pollution. They set out to figure out where it came from, but it took more than a century until Phaethon was discovered.
Even if you're in a light-polluted part of the world, you still might be able to see at least a handful of meteors per hour.
Those in the Northern Hemisphere will be able to get a better view of the cosmic shower.
Defined as the "best and most reliable" meteor shower of the year by NASA, the spectacular sky show is generated because of an asteroid named 3200 Phaethon.