Here's why:
* Smaller: The apparent size of an object decreases as its distance increases. This is simply due to the geometry of perspective. Imagine holding a coin at arm's length and then gradually moving it further away. The coin appears to shrink as it gets farther from you. The same principle applies to celestial objects.
* Dimmer: Light from celestial objects spreads out as it travels through space. As the distance between the viewer and the object increases, the light reaching the viewer becomes more spread out, resulting in a decrease in brightness or intensity. This is why stars appear fainter the further away they are.
This phenomenon is known as inverse square law, which states that the intensity of light decreases proportionally to the square of the distance from the source.
