Asters
Radial microtubule arrays found in animal cells that help to manipulate chromosomes during cell division. It is found around the centrioles during mitosis, star-shaped. Asters help to manipulate chromosomes during cell division to ensure that each daughter cell has the appropriate complement of chromosomes.
Reference:
1) About.com, Biology. Available at : http://biology.about.com/od/mitosisglossary/g/asters.htm (20 Nov 2013)