An aster is a cellular structure shaped like a star, formed around each centrosome during mitosis in an animal cell. Astral rays, composed of microtubules, radiate from the centrosphere and look like a cloud. It is one of the variants of microtubules like kinetochore and interpolar microtubules. read more
Asters are vital to the processes of mitosis and meiosis. They are a component of the spindle apparatus, which also includes spindle fibers, motor proteins, and chromosomes. Asters help to organize and position the spindle apparatus during cell division. read more