I think the term you're looking for is "regular variable."
Cooler and Dimmer
a sun is a star so it would be considered both dimmer .
Farther away!
a star explodes or becomes a white dwarf, then the matter of that star becomes other things.
The dimmer, secondary star passes in front of the brigher primary star, dimming it.
Cooler and Dimmer
first its called the main sequence star like the sun then it becomes a red giant then it becomes a red super giant and if it is huge a hyper-giant like VY Canis Majoris (largest star known) then it explodes and it becomes a planetary nebula then it becomes a white dwarf
a sun is a star so it would be considered both dimmer .
Farther away!
How bright a star appears depends on both its actual brightness and how far away it is. The farther away a star is, the dimmer it appears. A bright but very distant star many therefore appear dimmer than a less bright star that is closer to us.
Yes. A star is a regular polygon.
a star explodes or becomes a white dwarf, then the matter of that star becomes other things.
The dimmer, secondary star passes in front of the brigher primary star, dimming it.
Venus is closer to the Sun than we are, so it always appears close to the Sun in the sky. At times when it sets after the Sun, it is called the Evening Star. It becomes brighter and brighter as it catches up with us in its orbit, and finally it moves round in front of the Sun and disappears in the glare. A few weeks later is reappers as a morning star, rising before sunrise. It's bright at first and then it gradually becomes dimmer and disappears behind the Sun. Venus the Evening Star will be visible in early 2014.
The mass of the star.
I don't know u answer it
A red dwarf star is smaller, dimmer, and cooler than our sun.