In a manner that is heliocentric; viewing or describing something from the perspective where the sun is at the center of the solar system.
From heliocentric plus the '-ly' adverb suffix, allowing the concept to describe how something is done or viewed rather than just what something is.
When you say 'heliocentrically speaking,' you're placing the sun at the center of your explanation—it's the astronomical way of saying 'from the sun's point of view!'
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