Before 2006 our solar system boasted nine planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. Then the International Astronomical Union (IAU) laid out its three laws for what constitutes a full-size "planet".
It is this third criterion that saw Pluto demoted to "dwarf planet" status, joining its neighbours Eris (which is slightly larger than Pluto), Makemake and Haumea in the outlying Kuiper Belt, as well as Ceres in the Asteroid Belt (between Mars and Jupiter).
8 tips for solar customers as California's NEM 3.0 begins
Amid the changes to net energy metering in California that go into effect starting on April 15, and the surge in consumers across the state adopting rooftop solar, California's solar and storage industry is sharing tips and best practices for consumers considering going solar.
Despite Months of Snow, Solar Panels Can Still Pay Off in Michigan - CNET
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Location. A roof oriented toward the sun with an unobstructed view will generate more electricity.
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