[ScienceD] Simpler way to define what makes a planet

[Science Daily]

Simpler way to define what makes a planet

A professor of planetary astronomy has described a simple 'planet test' that can be readily applied to bodies orbiting the sun and other stars. According to this new test, all eight solar system planets and all classifiable exoplanets are confirmed as planets.

http://feeds.sciencedaily.com/~r/science...134519.htm