How to See a Comet with the Naked Eye or Binoculars

A comet can be a memorable sight, but it may look nothing like a dramatic photograph. It can appear as a small fuzzy patch with a faint tail. To give yourself the best chance, check current predictions for your location and find a dark, clear sky.

What is a comet?

A comet is a small body made of ice, dust and rock. As it approaches the Sun, it releases gas and dust. A bright envelope called a coma forms around the nucleus, and one or more tails can appear. Sunlight and the solar wind make those tails point generally away from the Sun. NASA explains comet structure.

Can you see a comet without a telescope?

Some comets become visible to the naked eye, but many require binoculars or a telescope. Their brightness can change quickly and predictions are uncertain. Even a comet described as visible may be hard to find from a city.

When and where should you look?

The best time depends on the comet’s position relative to the Sun and the horizon. Some are seen after sunset, others before dawn or during the night. Check an up-to-date prediction for your location, then choose an open horizon and a place with little light pollution.

What equipment helps?

Start with your eyes if the comet is bright enough. Binoculars have a wide field of view and often make it easier to locate. A telescope may reveal more detail in the coma, but its narrow field can make searching harder. Never point an optical instrument towards the Sun.

How can you find the comet?

A comet changes position relative to the stars from night to night. Identify a nearby constellation, then scan slowly with binoculars. Give your eyes at least twenty minutes to adapt to the dark and dim your phone screen.

AstroAlert brings comets, satellites and planets together to help you prepare an observation for your location. For more targets to explore, read our guide to observing planets and deep-sky objects.

Discover AstroAlert and plan your next night under the stars.

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