lol why is this in 'hair-loss' fun? rofl hard...

no they don't. but when they twinkle, they kind of look like that.

No...when someone's cornea is scratched (which occurs frequently) bright lights appear scattered and "star-shaped." Stars are actually spherical.

The five-pointed star was invented by Betsy Ross in 1777. George Washington, the current President of the United States, asked her to create a flag for the United States, according to a design he presented to her. Betsy Ross was the official flagmaker of the Pennsylvania Navy. She convinced George Washington to change all the six-pointed stars in his design to five-pointed stars, since her grandmother had taught Betsy how to cut perfect five-pointed stars out of cloth. That's how the five-pointed star was invented. Many people have stolen the five-pointed star from the flag of the United States, and now they are teaching many children that is how real stars look, which they don't. Real stars are spheres, but because of the dirt in the earth's atmosphere, the stars look like they have points on them when viewed from the earth's surface, but most people think they look like 4 or 6-pointed stars, but Betsy Ross's grandmother actually invented the five-pointed star, and many countries have taken the symbol to use on their flags, since they cannot come up with a good symbol for their nation. I am a member of the North American Vexillological Association (http://ww.nava.org), which is a worldwide association devoted to vexillology, which is the study of flags. I hope this helps. CUL8R! ;-)

Lenses and telescopes do something to the light, as does the Earths atmosphere. A real star is a blazing sphere of superheated gases with jets shooting up many kilometres from the surface, sometimes coming back down or other times disappating into space, but there are no uniform points at all.

the five-pointed star was NOT invented by Betsy Ross http://en.wikipedia.org/wiki/Pentagram

You are probably referring to the drawn shape of a star, with five or so points. I believe that is a fair representation of the light beams we seem to see coming from them, as they are in the night sky.   If you are referring to the actual shape of the star, in space, here is a great answer I gave this week regarding the shape of planets. I realize there is a difference between a planet, and a star, but, the same basic principles apply. Basically, the gravity on a spinning object makes it spherical. Here is a link to that answer, I hope this is helpful. http://www.answerbag.com/a_view/4467269

There is a different school of thought in China. They said that the orbit of venus forms this shape every four years. the shape is therefore not an invention but just a result of astrology observation.