Approximately how many Earth-sized planets are believed to exist in the Milky Way Galaxy?
A) a few dozen
B) several thousand
C) several million
D) several billion

Question

Quizplus · Accepted Answer

Astronomers estimate that there are several billion Earth-sized planets in the habitable zones of Sun-like stars in the Milky Way Galaxy. This estimation is based on data from the Kepler Space Telescope and other observations, suggesting a vast number of potentially habitable planets.

Approximately How Many Earth-Sized Planets Are Believed to Exist in the Milky