Asked in AstronomyPlanetary ScienceThe Solar System
The Solar System
What are star systems?
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Asked in Star Wars Books
How many star systems are in the Star Wars galaxy?
Asked in Stars
What percentage of stars are in multiple-star systems?
Asked in Star Wars Movies
Is it impossible to list all 180 billion star systems in the Star Wars galaxy?
Asked in Star Wars Books
Will the appendix of Star Wars The Essential Atlas Online Companion have all 180 billion star systems?
Asked in Astronomy, Planetary Science, Constellations
What is the differece between a star and a constellation?
Asked in Astronomy, Stars, The Solar System
What is the name of your solar systems biggest star?
Asked in Astronomy, Stars, Astrophysics
Which is most common individual stars or multiple star systems?
Are there any HVAC systems that are Energy Star certified?
Asked in Astronomy, Star Wars Books
How many years would it take to count all the star systems in the Star Wars galaxy since there are 180 billion of them?
Asked in Astronomy, Planetary Science, Stars
How are star systems identified?
Depends on what you mean by star systems. If you mean solar systems, we use two main ways to determine if there are planets. We use the "wobble" method, in which the planet causes the star to wobble. We can tell the orbital speed and size of the planet by the frequency of the wobble. We also use the light of the star itself. If a large enough planet passes in front of the star, it will dim slightly. We can also tell the approximate size and orbital period of the plane by how often, and to what extent the star dims. Star systems can consist of one or more stars (the Alpha Centauri system has three stars orbiting each other).
Asked in Astronomy, Stars, Galaxies
What is a binary star?
A binary star is a star system consisting of two stars orbiting around their common barycenter. Systems of two, three, four, or even more stars are called multiple star systems. These systems, especially when more distant, often appear to the unaided eye as a single point of light, and are then revealed as double (or more) by other means.
Asked in Planetary Science
How many observed stars do astronomers estimate are part of multiple star systems?
A good rule of thumb: Of the stars in the sky 1/2 are in double star systems Of the double stars in the sky 1/3 are in triple star systems Of the triple stars in the sky 1/4 are in quartenary systems ad infinitum It's not precisely correct, but uncertainty in these numbers are so large that it is within the error bars.