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Millions of people across the U.S. can watch a “ring of fire“ solar eclipse on Saturday. The celestial show, known as an annular solar eclipse, will briefly dim the skies and capture the attention of skygazers along a narrow path between Oregon and Texas. Saturday's eclipse previews the total solar eclipse that will sweep across the eastern half of the U.S. in six months. The U.S. last saw a solar eclipse of this kind in May 2012. It will be 2039 before another ring of fire is visible in the U.S., and Alaska will be the only state then in the path of totality. And it will be 2046 before another ring of fire crosses into the U.S. Lower 48. Fast facts about the eclipse:
