The solar mass (Mâ) is a standard unit of mass in astronomy that is used to indicate the masses of other stars, as well as clusters, nebulae and galaxies. It is equal to the mass of the Sun, about two nonillion kilograms :
The semicolon or semi-colon (;) is a punctuation mark that separates major sentence elements. A semicolon can be used between two closely related independent clauses, provided they are not already joined by a coordinating conjunction. Semicolons can also be used in place of commas to separate items in a list, particularly when the elements of that list contain commas.
Semicolon vs Colon. Knowing the difference between semicolon and colon is of great importance when using the English language. Semicolon and Colon are punctuation marks that should be used with precision in order to convey the correct sense. It is hence very important to distinguish between the two punctuation marks, colon and semicolon. Now, according to the history, the word colon has its origins in the mid 16th century.