If an astronomer finds an object at a distance of 6.8 AU from Earth,what is the object MOST likely to be?
A) a star in our Galaxy
B) a distant galaxy
C) an artificial satellite orbiting Earth
D) a comet in our solar system

Question

Quizplus · Accepted Answer

The distance of 6.8 AU from Earth suggests that the object is within our own solar system. Most likely an object in our own solar system would be a comet, as they have highly elliptical orbits that can take them far from the Sun (up to distances of thousands of AU). Stars in our galaxy and distant galaxies would be much farther away, while an artificial satellite would not be at such a great distance from Earth.

If an Astronomer Finds an Object at a Distance of 6.8