Question

question 3 of 10
scientists are always learning new things. which of the following shows how scientists use observations to gain new understanding about the world?
a. scientists hope to learn more about how many stars are in space.
b. scientists wonder if other planets can support life, and some scientists wonder if there are aliens.
c. scientists have discovered new planets orbiting a star by detecting a wobble in the stars motion.
d. scientists are familiar with some galaxies, but they do not know how many galaxies exist.

Explanation:

Options A, B, and D only state hopes or unknowns. Option C describes using the observation of a star's wobble motion to discover new planets, showing how observations lead to new understanding.

Answer:

C. Scientists have discovered new planets orbiting a star by detecting a wobble in the star's motion.