Which of these is known to be a relatively common characteristic of exoplanet systems, in contrast to our own solar system?
A) gas giants without any moons
B) eccentric orbits
C) terrestrial planets in the outer regions of exoplanet systems
D) impacts between exoplanets billions of years into the star system's lifetime

Question

Quizplus · Accepted Answer

Eccentric orbits are relatively common in exoplanet systems, contrasting with the mostly circular orbits seen in our solar system. This is due to the diverse conditions under which exoplanets form and evolve, including interactions with other planets and remnants of the protoplanetary disk.

Which of These Is Known to Be a Relatively Common