Candles are a leading cause of home fires and fatalities. Soot on the walls and furnishings is unsightly, and may also be a sign of serious problems. It may also be unhealthy, as inhalation of minute particles of soot has been documented to cause health problems.
It is a popular misconception that the phenomenon of a total eclipse of the sun is a rare occurrence. Quite the contrary. Approximately once every 18 months (on average) a total solar eclipse is visible from some place on the Earthâs surface. That's two totalities for every three years.
There are generally two solar eclipses each year. About half of them are partial, and the remaining ones are divided between full and annular eclipses. You can look up the câ¦atalog of all eclipses from 2000BC to 3000AD on the NASA Eclipse Web Page.