Directions: Read the short passage "An Adventure in Space" in the box below. Use the passage to answer any questions that follow.
An Adventure in Space
On a day in the distant future, a team of astronauts guides their spaceship on a journey through the solar system. Suddenly, a rocky object a few meters long appears in front of them. They move around the object, only to be confronted with similar objects. Some of these are smaller, and some are slightly larger.
Which of the following have the astronauts most likely encountered?