A massive gravitationally bound system typically refers to a structure in the universe where a significant amount of mass, such as galaxies or galaxy clusters, is held together by gravitational forces. This binding occurs when the gravitational attraction between the constituent objects is strong enough to overcome their kinetic energy, preventing them from drifting apart. Such systems can include galaxies, star clusters, or even larger structures like superclusters, which play a crucial role in the large-scale structure of the universe.
The stars are said to be a "gravitational binary pair"
The Solar System[a] consists of the Sun and the astronomical objects bound to it by gravity, all of which formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago.A galaxy is a massive, gravitationally bound system that consists of stars and stellar remnants, an interstellar medium of gas dust, and an important but poorly understood component tentatively dubbed dark matter.[1][2] The name is from the Greek rootgalaxias [γαλαξίας], literally meaning "milky", a reference to the Milky Way galaxy.
The length of time an interstellar star, or a star located in the space between star systems, exists can vary significantly based on its mass and type. Massive stars have shorter lifespans, typically ranging from a few million to a few hundred million years, while smaller stars, like red dwarfs, can last for tens to hundreds of billions of years. Since interstellar stars are often in regions of space where they are not gravitationally bound to any galaxy, their lifetimes are generally similar to those of stars in galaxies.
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A normal (but fairly massive) star.A normal (but fairly massive) star.A normal (but fairly massive) star.A normal (but fairly massive) star.
A binary star.
A binary star.
Two stars that are gravitationally bound to each other are sometimes called "binary stars".
Moons are natural satellites that orbit planets, planets orbit stars like our Sun, and stars are part of galaxies that contain planets and moons. Moons are gravitationally bound to planets while planets are gravitationally bound to stars. All three are part of the same interconnected celestial system.
The force of colliding particles
The Milky Way is gravitationally bound to the Local Group - that means they stay together, due to gravity. Unlike the Solar System, there is not one single massive object at the center, so the movements of the galaxies are a bit more complicated.
The stars are said to be a "gravitational binary pair"
A galaxy is a gravitationally-bound region of space consisting of luminous and dark matter as a single physical system.
A binary star is a system of two stars gravitationally bound together that are constantly orbiting each other.
The Sun, and anything that orbits around the Sun, being gravitationally bound to it. This includes planets, planetoids, moons, interplanetery dust and gas, the Oort cloud, and probably a few other things more.The Sun, and anything that orbits around the Sun, being gravitationally bound to it. This includes planets, planetoids, moons, interplanetery dust and gas, the Oort cloud, and probably a few other things more.The Sun, and anything that orbits around the Sun, being gravitationally bound to it. This includes planets, planetoids, moons, interplanetery dust and gas, the Oort cloud, and probably a few other things more.The Sun, and anything that orbits around the Sun, being gravitationally bound to it. This includes planets, planetoids, moons, interplanetery dust and gas, the Oort cloud, and probably a few other things more.
A star that is gravitationally bound to another star can either be part of a binary star system, where two stars orbit around a common center of mass, or be part of a star cluster, where multiple stars are held together by gravitational forces within a common region of space.
its the universe with our planets and moons in it