the.com/clearing orbit
the cosmic rent you pay to count as a real planet.
means a planet's gravitational dominance over its orbital neighborhood, sweeping up or flinging away rivals until it reigns alone.
from formalized in the IAU's 2006 planet definition, drafted partly to settle what to do about Pluto after Eris turned up looking just as big.
pluto failshares its orbit with kuiper belt clutter, so demoted
three-part testorbit the sun, be round, clear the neighborhood
time mattersearth needed hundreds of millions of years to clear
exoplanets exemptthe rule technically only governs our solar system