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.
If the orbit of the Moon were in the plane of Earth's orbit around the Sun, there would be a solar eclipse every New Moon and a lunar eclipse every Full Moon, but this is not the case. From any spot on Earth we see a total eclipse of the Moon about every 2 years and a partial solar eclipse less frequently.