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  2. Stellar collision - Wikipedia

    en.wikipedia.org/wiki/Stellar_collision

    About half of all the stars in the sky are part of binary systems, with two stars orbiting each other. Some binary stars orbit each other so closely that they share the same atmosphere, giving the system a peanut shape. While most such contact binary systems are stable, some do become unstable and either eject one partner or eventually merge.

  3. Kepler-47b - Wikipedia

    en.wikipedia.org/wiki/Kepler-47b

    The stars orbit each other about every 7.45 days. [2] The stars have masses of 1.04 M ☉ and 0.35 M ☉ and radii of 0.96 R ☉ and 0.35 R ☉ , respectively. [ 2 ] [ 1 ] They have temperatures of 5636 K and 3357 K. [ 2 ] [ 1 ] Based on the stellar characteristics and orbital dynamics, an estimated age of 4–5 billion years for the system is ...

  4. Binary star - Wikipedia

    en.wikipedia.org/wiki/Binary_star

    A binary star or binary star system is a system of two stars that are gravitationally bound to and in orbit around each other. Binary stars in the night sky that are seen as a single object to the naked eye are often resolved as separate stars using a telescope , in which case they are called visual binaries .

  5. Kepler-47 - Wikipedia

    en.wikipedia.org/wiki/Kepler-47

    The binary system is composed of a G-type main sequence star (Kepler-47A) and a red dwarf star (Kepler-47B). The stars orbit each other around their barycenter, or center of mass between them, completing one full orbit every 7.45 days. [4] The stars orbit their barycenter from a distance of about 0.084 AU. [4]

  6. SpaceEngine - Wikipedia

    en.wikipedia.org/wiki/SpaceEngine

    Although objects that form part of a planetary system move, and stars rotate about their axes and orbit each other in multiple star systems, stellar proper motion or precession is not simulated, and galaxies are at fixed locations and do not rotate. Most real-world spacecraft such as Voyager 2 are not provided with SpaceEngine. The few ...

  7. Two-body problem - Wikipedia

    en.wikipedia.org/wiki/Two-body_problem

    In classical mechanics, the two-body problem is to calculate and predict the motion of two massive bodies that are orbiting each other in space. The problem assumes that the two bodies are point particles that interact only with one another; the only force affecting each object arises from the other one, and all other objects are ignored.

  8. Star system - Wikipedia

    en.wikipedia.org/wiki/Star_system

    A multiple star system consists of two or more stars that appear from Earth to be close to one another in the sky. [dubious – discuss] This may result from the stars actually being physically close and gravitationally bound to each other, in which case it is a physical multiple star, or this closeness may be merely apparent, in which case it is an optical multiple star [a] Physical multiple ...

  9. Binary system - Wikipedia

    en.wikipedia.org/wiki/Binary_system

    Binary stars are also classified based on orbit. Wide binaries are objects with orbits that keep them apart from one another. They evolve separately and have very little effect on each other. Close binaries are close to each other and are able to transfer mass from one another. They can also be classified based on how we observe them.