NASA Solar System
@NASASolarSystem
Join us as we explore the worlds of our solar system.
参加 June 2008
140 フォロー中 3M ファン
No other traveler has ever journeyed so far from home.
Voyager 1 is about to become the first human-made object to reach a distance of one light-day from Earth, or about 16 billion miles. ½
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