Question

which of the following astronomical units is closest to the distance of the earth to the sun? a) 9.5 au b) 9.1 au c) 1 au d) 3.7 au question 16 (5 points) what constitute the most common way that images of space are captured? a) astronauts visiting the international space center b) fly - by missions c) gps satellites in earths orbit

Explanation:

1. The astronomical unit (AU) is defined as the average distance between the Earth and the Sun, which is approximately 1 AU. So for the first question, the answer is based on this definition.
2. For the second question, space - based telescopes and spacecraft are the most common way to capture space images. Fly - by missions use spacecraft to take pictures as they pass by celestial objects, which is a very common method. Astronauts at the International Space Station are not the most common way for general space imaging, and GPS satellites are mainly for positioning and not for general space imaging.

Answer:

1. C. 1 AU
2. B. Fly - by missions