caption: Stars in space Not all stars are isolated from each other, like the Sun is. Many stars exist as binary stars, two stars that orbit each other.
exif: {"Image DocumentName": "Stars in spaceNot all stars are isolated from each other, like the Sun is. Many stars exist as binary stars, two stars that orbit each other.", "Image ImageDescription": "Binary stars are very important to astronomy, as they are how we measure masses of stars. Some stars come as triples, quadruples, or more. Some stars come in clusters, with hundreds to millions of stars grouped together in space. Two general types of clusters. Open clusters have fewer stars (hundreds to thousands) and are more spread out. Globular clusters have more stars (thousands to millions) and the stars are more closely packed. Clusters are very important to astronomy, because they allow us to measure relative intrinsic brightnesses of stars, since all stars in a cluster are at the same distance from us. They are also important because it turns out that all stars in a given cluster have the same age.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}