This image of M3 is a combination of a B-band image and a Z-band image (Z is approximately from 8500 to 9500 A) taken on March 22, 2003, at the WIYN 3.5-meter telescope in 0.4 arcsec seeing.

• 球状星团星一个拥有数万颗恒星的天体，这些恒星靠重力将几十颗星维系在一起，这些恒星相对地都十分年老。