…Unless you are in the right place, at the right time on August 21st 2017. On this day there will be a total solar eclipse visible to a 70 mile wide band across the US. Within this band from Salem, Oregon to Charleston, South Carolina the moon will briefly block the sun for a few minutes.
Beforehand or if you are outside the path of the total eclipse you will need special glasses to watch the eclipse safely. Regular sunglasses do not have the protection needed for viewing the eclipse to know if the glasses you have are safe they should meet the ISO 12312-2 international safety standard. Looking at the eclipse without eclipse glasses can cause damage to the eye, specifically the macula which is needed for central vision. Damage to this area in the form of a sunburn can lead to decreased vision either temporarily or permanently.
There are various places to pick up a pair of eclipse glasses both online and in person. Be warry of counterfeit glasses or hand held viewers that claim to meet safety standards, but have not actually passed testing. Here is a list of reputable vendors so you know you are keeping your eyes safe!