Neptune takes the longest time to complete one orbit around the Sun—approximately 165 Earth years. This is because it's the farthest planet from the Sun in our Solar System, leading to a much larger orbital path and slower orbital speed.
Which planet takes the longest time to go once around the Sun?
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This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.