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For these few moments, eclipse viewers can be safely removed. (In fact, if you don’t take off your eye protection, you won’t be able to see the solar corona.)

The American Astronomical Society has compiled a list of vendors where you can buy safe eclipse glasses. Make sure you carefully read the instructions that come with the glasses.

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The Sun can burn the retinas in the eyes leading to permanent damage or even blindness. This can occur even if your eyes are exposed to direct sunlight for just a few seconds.

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Never look directly at the Sun. You can seriously hurt your eyes, and even go blind. Proper eye protection, like eclipse glasses or a special solar filter, is the only safe option. Sunglasses don't work.

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Projection works well. You can make your own box projector or use a telescope or binoculars. However, don't look through the telescope’s eyepiece or side-mounted finder scope while projecting the Sun's image onto a screen.

Solar filters should never be used with optical devices such as telescopes and binoculars, unless it is a specialist solar filter designed for use with that particular device. If you are uncertain about whether a filter is safe, do not use it. Avoid all risks.

NASA also recommends welder's glasses rated 14 or higher. These can be found at your local welding supply store. Keep in mind that welder glass grading may be different in different countries.

You can use special solar filters to watch the Sun during a solar eclipse, but use the proper type of solar filter that is designed for eclipses. Check that filters do not crack under the Sun’s magnified and focused intensity. Solar filters must be treated with care, or they can quickly become damaged and unsafe to use.

In the brief moments of totality during a total solar eclipse, the Sun is completely covered, and the ghostly solar corona becomes visible around the Moon.