which object would have to be farthest from an observer to be invisible to the naked eye? a earths moon b a…

which object would have to be farthest from an observer to be invisible to the naked eye? a earths moon b a planet roughly the size of earth c a star roughly the size of the sun d a planet roughly the size of jupiter

which object would have to be farthest from an observer to be invisible to the naked eye? a earths moon b a planet roughly the size of earth c a star roughly the size of the sun d a planet roughly the size of jupiter

Answer

Answer:

C. a star roughly the size of the sun

Explanation:

Step1: Understand visibility factors

Visibility depends on size and luminosity. Stars emit light, planets reflect.

Step2: Analyze each option

  • A. Earth's moon: Close and reflects light, visible.
  • B. Earth - sized planet: Reflects light, less luminous than star.
  • C. Sun - sized star: Emits a lot of light, can be visible from far.
  • D. Jupiter - sized planet: Reflects light, less luminous than star. Stars (like the Sun - sized one) emit their own light. Planets (including Earth - sized and Jupiter - sized) reflect light from stars. The Moon reflects sunlight. A star’s luminosity allows it to be visible from a greater distance compared to objects that just reflect light. So a star roughly the size of the sun would have to be farthest from an observer to be invisible to the naked eye.