Question

planets adapted from nasa 1 our understanding about the universe and our place in it has changed over time. new information can cause us to rethink what we know and reexamine how we classify objects to better understand them. new ideas and views can come from questioning an existing theory. what is a planet? 2 this simple question doesnt have a simple answer. defining the term planet is important, because such definitions reflect our understanding of the origins, architecture, and evolution of our solar system. 3 pluto, discovered in 1930, was identified as the ninth planet. pluto is much smaller than mercury and is even smaller than some of the planetary moons. though pluto kept its planetary status through the 1980s, things began to change in the 1990s with some new discoveries. 4 technical advances in telescopes led to better select the correct answer based on the selection, what is the authors message about the new definition of planets? a. the iau used poor methods when setting a new definition for planets. b. it is uncertain whether the definition of planet will remain the same in the future. c. the new definition for planets needs to be considered as settled moving forward. d. pluto should not have been the reason why iau changed the definition of planets.

Explanation:

The passage emphasizes that our understanding of the universe changes with new information, and the definition of a planet is not fixed. It implies that future new information could change the planet - definition again.

Answer:

B. It is uncertain whether the definition of planet will remain the same in the future.