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.
Semicolons. It's no accident that a semicolon is a period atop a comma. Like commas, semicolons indicate an audible pauseâslightly longer than a comma's, but short of a period's full stop. Semicolons have other functions, too. But first, a caveat: avoid the common mistake of using a semicolon to replace a colon (see the Colons section). Incorrect: I have one goal; to find her. Correct: I have one goal: to find her. Rule 1. A semicolon can replace a period if the writer wishes to narrow the gap between two closely linked sentences.