Interstellar exoplanets, which do NOT orbit a star, are most likely
A) extremely rare, with only a few in the Galaxy.
B) much less common than those still bound to a star, with only about 1 such exoplanet per 1000 stars in the Galaxy.
C) less common than those still bound to a star, with only about 1 such exoplanet per 10 stars in the Galaxy.
D) more common than stars in our Galaxy.

Question

Quizplus · Accepted Answer

Interstellar exoplanets, also known as rogue planets, are believed to be quite common, potentially outnumbering the stars in our galaxy. This is because they can be ejected from their parent systems through various dynamical processes, and given the vast number of stars and planetary systems in the galaxy, the number of these rogue planets could be very high.

Interstellar Exoplanets, Which Do NOT Orbit a Star, Are Most