English example sentences with "perihelion"

The general theory of relativity explains the anomalous perihelion precession of the planet Mercury.
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The perihelion is the point where an object in orbit around the Sun is nearest to the Sun.
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Astronomers say that the comet, which made its closest approach to the Sun, or perihelion, on January 30, 2015, was also one of the most dazzling and active comets to pass us since comet Hale-Bopp in 1997.
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