The diamond ring phase over Newberry, South Carolina, during the total solar eclipse August 21, 2017. (Credit: Michael Roudabush/Wikimedia Commons)

Tuesday, July 2, will bring a special kind of darkness to South America. In certain parts of Chile and Argentina, people will find a strange twilight falling as the Moon inches across and ultimately covers the Sun’s disk completely in a total solar eclipse lasting just over two minutes for most observers.

For those lucky people in the path of