Binary stars
The stars are said to be a "gravitational binary pair"
Two stars that are gravitationally bound to each other are sometimes called "binary stars".
A binary star is a system of two stars gravitationally bound together that are constantly orbiting each other.
Double stars, also called binary stars, are valuable to astronomers because they are the only stars of which astronomers can easily calculate their mass. They are bound to each other by gravity and orbit about a common center. The time it takes for one star to orbit the other depends on the distance between the two stars and their masses.
A binary star is a system of two stars gravitationally bound together that are constantly orbiting each other.
Sandra Bullock and George Clooney were the 2 stars in the film Gravity.
When two stars are bound together by gravity and orbit a common center of mass, they are known as a binary star system. These systems can be classified as visual binaries, where the stars can be observed separately, or spectroscopic binaries, where they are too close to be distinguished visually but can be identified through their spectral lines. Binary star systems play a crucial role in understanding stellar masses and evolution.
binary pair
A binary star.
The force of attraction that exists between two objects is called gravity. Gravity is a natural phenomenon by which all objects with mass are brought towards one another. It is responsible for keeping planets in orbit around stars and for objects falling to the ground when dropped.
A binary star.
A group of stars that are closer together than the surrounding stars is called a star cluster. Star clusters can be divided into two main types: open clusters and globular clusters, with open clusters being more loosely bound than globular clusters.