Eris, minor-planet designation 136199 Eris, is the most massive known dwarf planet in the Solar System and the ninth most massive body known to orbit the Sun directly.
|Ernst Thalmann Pioneers (Young Pioneers or Thalmann Pioneers)|
This is the logo of German Democratic Republic youth organization the Ernst Thalmann Pioneers(Young Pioneers or Thalmann Pioneers). Most school children of the German Democratic Republic aged 6-14 be…
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