Here is a list of some notable star systems that are located within 45 to 50 light-years from Earth: 1. **Gliese 581** - A red dwarf star with at least four known planets, including potentially habitable planet Gliese 581g. 2. **Gliese 669** - A star system with several planets, including one in the habitable zone. 3. **HD 196885** - A binary star system with a known exoplanet.
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