* Redshifted: This means the light from the star is shifted towards the red end of the electromagnetic spectrum. This is due to the expansion of the universe, causing the light waves to stretch as they travel over vast distances.
* Dimmer: The light from a star spreads out over a larger area as it travels farther, making it appear less bright. This is due to the inverse square law, which states that the intensity of light decreases with the square of the distance.
* Difficult to see: Faint, distant stars become harder to see because their light is spread out and absorbed by the interstellar medium.
It's important to note that a star's apparent magnitude (how bright it appears from Earth) is not a direct measure of its distance. A star can appear bright because it is very luminous, even if it's far away. Astronomers use various techniques, like parallax and standard candles, to determine the actual distance to a star.
