Presentation on theme: "Star Systems and Galaxies"— Presentation transcript:
1 Star Systems and Galaxies Section 15-4Star Systems and Galaxies
2 Star systems and Planets More than half of all stars are members of groups of two or more stars called star systems
3 Star systems and Planets Double and Triple StarsBinary System – two or more starsEclipsing Binary System – where one star covers the otherFound by looking at star “wobble” from gravitational pull of other starPlanets around other starsAlso found by looking at “wobble” caused by gravity
4 Galaxies Irregular Galaxies Spiral Elliptical Galaxies Three types of Galaxies: spiral, elliptical, and irregularSpiralPinwheel shapeElliptical GalaxiesShaped like a flattened ballIrregular GalaxiesNo particular shape, usually a cloud (very large nebula)
Your consent to our cookies if you continue to use this website.