What’s in a Name?

  1. It is in orbit around a star.
  2. It has sufficient mass to maintain hydrostatic equilibrium with a spheroidal shape.
  3. It has cleared the neighborhood around its orbit.

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Avi Loeb

Avi Loeb

Avi Loeb is the Frank B. Baird Jr Professor of Science and Institute director at Harvard University and is the bestselling author of “Extraterrestrial”.