the.com/trans neptunian
the icy suburbs of the solar system, where planets go to become rumors.
means any object orbiting the sun farther out than neptune, including pluto and thousands of frozen leftovers from planet formation.
from coined from latin trans meaning across or beyond, tacked onto neptune once astronomers realized pluto had company out there starting in the 1990s.
pluto demotedreclassified once thousands of cousins turned up nearby
kuiper beltmain neighborhood, doughnut-shaped, past neptune's orbit
eris dramaeris is heavier than pluto, sparked the whole reclassification
sedna outliertakes about 11,000 years to complete one orbit