double star

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Word: Double Star

Definition:
A "double star" is a noun that refers to a system of two stars that orbit, or revolve around, each other because of their mutual gravitational attraction. This means that they are close enough to influence each other's movement in space.

Advanced Usage:

In more advanced discussions, "double stars" can be categorized into different types, such as binary stars, where the stars are gravitationally bound and orbit each other, and optical doubles, where two stars appear close together in the sky but are actually very far apart.

Word Variants:

• Binary Star: A specific type of double star where the two stars are in a close orbit around each other.
• Optical Double: A pair of stars that are not physically related but appear close together from our point of view on Earth.

Different Meanings:

While "double star" primarily refers to the astronomical definition, in some contexts, it might be used metaphorically to describe a situation where two entities are closely linked or interdependent.

Synonyms:

• Binary star (more specific)
• Twin stars (less common, more informal)

Idioms and Phrasal Verbs:

There are no widely recognized idioms or phrasal verbs specifically using "double star," but you can create a phrase like "as close as a double star" to describe a very close relationship between two people or things.

Summary:

A double star is a fascinating concept in astronomy that highlights the relationship between two stars in space.

Academic

Noun

1. a system of two stars that revolve around each other under their mutual gravitation

Synonyms

• binary star
• binary