There are several kinds of P/Es: 1  Trailing P/E: The earnings are the most recently reported quarter, plus the previous three reported quarters. 2  Forward P/E: The earnings number is the total of estimates for the current unreported quarter and estimates for the following three quarters.
A corona (Latin, ' crown ') is an aura of plasma that surrounds the sun and other celestial bodies. The Sun's corona extends millions of kilometres into space and is most easily seen during a total solar eclipse, but it is also observable with a coronagraph.
Two views of the Sun's corona: during an eclipse (top) and in ultraviolet light (bottom). The corona is the outer atmosphere of the Sun. It extends many thousands of kilometers (miles) above the visible surface of the Sun, gradually transforming into the solar wind that flows outward through our solar system. The material in the corona is an extremely hot but very tenuous plasma.