SOLAR SYSTEM

Detailed explanation-1: -A star’s brightness also depends on its proximity to us. The more distant an object is, the dimmer it appears. Therefore, if two stars have the same level of brightness, but one is farther away, the closer star will appear brighter than the more distant star-even though they are equally bright!

Detailed explanation-2: -The closer a star is to us, the brighter it will appear. Also, stars come in a variety of sizes and brightnesses. Larger stars usually shine more brightly than smaller stars do. So, how bright a star appears in the night sky depends on its size and how far away from us it is.

Detailed explanation-3: -The sun is a medium size star that appears larger and brighter than other stars because it is closer to us.

Detailed explanation-4: -This relates the Apparent Brightness of a star (or other light source) to its Luminosity (Intrinsic Brightness) through the Inverse Square Law of Brightness: At a particular Luminosity, the more distant an object is, the fainter its apparent brightness becomes as the square of the distance.

Detailed explanation-5: -While they are tens of times more luminous than the Sun, the nearest visible stars appear bright primarily because they are nearby. However, the majority of the 100 nearest stars (see list below) are not bright at all. They are red dwarfs, too faint to be visible to the unaided eye.

Detailed explanation-6: -As the size of a star increases, luminosity increases. If you think about it, a larger star has more surface area. That increased surface area allows more light and energy to be given off. Temperature also affects a star’s luminosity.