The borderline between the most massive planet and the least massive brown dwarf occurs at:
A) 4 Jupiter masses
B) 13 Jupiter masses
C) 120 Jupiter masses
D) 80 Jupiter masses
E) 45 Jupiter masses

Question

Quizplus · Accepted Answer

The borderline between the most massive planet and the least massive brown dwarf occurs at around 13 Jupiter masses. This is because brown dwarfs are objects that are not massive enough to sustain hydrogen fusion in their cores, while planets are not massive enough to undergo deuterium fusion. This boundary is not precisely defined and can vary somewhat depending on the individual object's composition and other factors, but 13 Jupiter masses is generally considered the dividing line.

The Borderline Between the Most Massive Planet and the Least