Approximately how many other planetary systems have been discovered to date?
A)about two thousand
B)tens of thousands
C)ten
D)about two hundred
E)millions

Question

Quizplus · Accepted Answer

As of August 2021, over 4,500 exoplanets (planets outside of our solar system) have been discovered around other stars. These discoveries have come from a variety of telescopes and observatories, including the Kepler and TESS missions. However, some of these exoplanets are in the same planetary systems, so the number of discovered planetary systems is estimated to be around two thousand.

Approximately How Many Other Planetary Systems Have Been Discovered to Date