Nothing. It's a common yellow dwarf.
what is unusual about the sun compared to many other stars ?????#
The only real difference is it's a little small.
It is unique only in the fact that is is 'our' star. Apart from that it is a perfectly normal G type star on the main sequence. Of which there are many millions. And is also not just any random star its the closest star to are home and mother earth. Its gives us seasons warmth,light,power through are solar systems.
trillions of other stars in the milkyway
Yes. Many stars have planetary systems.
The sun is larger than some of the other stars. There are many stars that are larger than the sun.
There are 12 stars that make up the constellations main outline, but there are many other stars "sprinkled" in among it.
There are many unusual features of the planet Mars. The planet is known for its unusual color of rust. The planet also has huge volcanoes.
The sun can be considered unusual compared to other stars because it has no companion. Nearly half of all know stars exist in pairs or in multiple star groupings. For example, the nearest star to the Sun, Proxima Centauri, is red dwarf star in a grouping with 2 other stars.
The north star, otherwise know as Polaris, is brighter than many other stars because it is much closer and perhaps larger than many other stars.
Binary stars.
The ostrich's foot is unusual because it has just 2 toes. This differs from many other flightless birds, which have three toes.