... The ones included below are either of the sort that keeps coming up again and again, or else the answers make a special point, often going into details which might interest many users. ... About asteroids hitting Earth. ... Asymmetry of the Moon's orbit. Measuring distance from the Sun. ... The Moon will also be somewhere near that line, and the division between dark and light--a straight line with "half moon", or the line connecting the tips of a crescent moon--is always perpendicular to it. ...