Question

what does scientific notation help astronomers do? simplify very large or very small numbers avoid using metric units avoid using mathematics altogether calculate the exact age of stars question 4 which of the following are reasons ancient civilizations studied the sky? that apply to track the seasons for migrations to keep track of time to navigate and travel to predict weather with certainty

Explanation:

Scientific notation is a way to express very large or very small numbers in a more concise form. Ancient civilizations studied the sky for practical purposes like tracking seasons for migrations, keeping time, and navigation, but weather - prediction with certainty was not possible.

Answer:

1. Simplify very large or very small numbers
2. To track the seasons for migrations

To keep track of time
To navigate and travel