Conjunctions are joining words that link two parts of a sentence together. When you add conjunctions to a sentence, they create a subordinate clause. A subordinate clause is a group of words that ...

Among these phenomena, planetary conjunctions hold a special allure. A planetary conjunction occurs when two or more planets appear close together in the sky from Earth's perspective. These ...

The event—known as a conjunction—will grace skies over the U.S. on Saturday evening, weather permitting. From the perspective of a viewer in the U.S., the pair will appear separated by just 2. ...