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Recording the location of a star requires a measurement of altitude, azimuth, and time.

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Where can you find photographs of the steamship Evening Star sunk 1866 and photos of her captain William Knapp?

Were you aware that American music composer Henry Clay Work composed an especial tune called "When the EVENING STAR Went Down" in 1866? It was re-produced in a sound recording during 1975 by Nonesuch Records i.e. Library of Congress Cat. No. 75-750647. Enjoy!


What does a star symbolize?

A star symbolizes the star of Bethlehem. when jesus was born they're was a star


What is a name of a lucky star?

the name of a lucky star is a shooting star


Why must astrolabes be level in science?

When navigating by the stars, or measuring an angle, there has to be a reference point. Oftentimes, we assume that a measurement is referenced to a particular point. (For example, a compass gives degrees in reference to magnetic north, not true north.) However, the use of a reference point is very important. In celestial navigation, the height, or angle, of certain stars and constellations is measured in reference to the horizon. Basically, you take the angle your astrolabe/sextant/stadimeter, whatever, and measure the angle from the horizon to the star. This forms a rough triangle with vertices at your location, the point of the Earth beneath the star, and the star itself. Obviously this is not terribly accurate, so you need to figure in a calculation taking into account the curvature of the Earth, and the expected position of the star. By using the correction and Nautical Almanac, you can create an ellipse that your ship must lie on if it is on the Earth's surface. Take measurements from two or more stars and find where they intersect--that's roughly (+-50mi or so) your position. The importance of shooting the horizon (i.e. being level) is apparent in the definition of Nautical Twilight--the level of light where you can use both the horizon and major stars as reference points.


How many All-Star games has Magic Johnson been in?

Magic Johnson has been selected to play in 12 NBA All-Star games. However, due to injury in 1989, Johnson decided to sit out the All-Star game that season. He was selected to play in the following games (the ones he played are in bold):1980 NBA All-Star game1982 NBA All-Star game1983 NBA All-Star game1984 NBA All-Star game1985 NBA All-Star game1986 NBA All-Star game2087 NBA All-Star game2088 NBA All-Star game2089 NBA All-Star game2090 NBA All-Star game2091 NBA All-Star game2092 NBA All-Star game