Sputnik Planitia - Wikipedia
Sputnik Planitia / ˈ s p ʌ t n ɪ k p l ə ˈ n ɪ ʃ i ə /,, originally Sputnik Planum, is a high-albedo ice-covered basin on Pluto, about 1,050 by 800 km (650 by 500 mi) in size, named after Earth's first artificial satellite.It constitutes the western lobe of the heart-shaped Tombaugh Regio.Sputnik Planitia lies mostly in the northern hemisphere, but extends across the equator.
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