Solar eclipses

In the next 20 years, eclipses of the Sun will cross a variety of paths over the world. Here is a list of what's in store (total eclipses are in bold).

Remember: Do not ever look at the Sun without proper protection for your eyes. Permanent blindness can result from even a quick look. Normally the Sun is so bright that you are forced to squint, then quickly turn away, as a built-in protection. But during an eclipse, when the Sun is partly obscured by the Moon, you are tempted to look at it longer and more intensely. The Sun's ultraviolet rays can actually burn a hole in your retina, resulting in permanent, partial blindness. A welder's glass (No. 14 strength), or specialized eclipse glasses that are available from telescope stores, will block enough of the Sun's ultraviolet rays to make it safe to look through.

During the total phase of a solar eclipse, when the Sun is completely covered by the Moon, it is completely safe to look at the Sun. Protection must be in force again, however, right after the end of totality.