The distance that ejecta travels away from a volcano depends on the height of the eruption column, temperature of the air, wind direction and wind speed. An erupting column that reaches into the stratosphere will be sheared by strong winds in this region and cause the eruption cloud to spread out over a larger area.
Solar eclipse of August 21, 2017. A total solar eclipse will take place on Monday, August 21, 2017. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth.
When & Where to See the Solar Eclipse of August 21, 2017. As the saying goes, a picture is worth 1,000 words. Here's a picture: Everyone in the continental United States will have a solar eclipse on August 21, 2017. But only those within the roughly 70-mile-wide path of totality will have a shot at the most awesome celestial event one can experience: a total solar eclipse.