An astronomer discovers an object at a distance of 28 Mpc from Earth. At this distance, what is the object MOST likely to be?
A) comet in our solar system
B) star in our Galaxy
C) artificial satellite orbiting Earth
D) distant galaxy

Question

Quizplus · Accepted Answer

28 Mpc (megaparsecs) is a vast distance, much larger than the scale of our solar system, our galaxy, or the region around Earth where artificial satellites orbit. This distance is typical for distant galaxies, making option D the most likely choice.

An Astronomer Discovers an Object at a Distance of 28