Galaxy NGC 3310 is a "starburst" galaxy located some 59 million light years away toward the constellation Ursa Major (or the "Big Dipper.") Galaxy "starbursts" are episodes of vigorous formation of new stars and are found in various galaxy environments. Galaxy NGC 3310 is forming clusters of new stars at an unusually high rate. Several hundred clusters of newly formed stars are visible in this image, as bright blue, diffuse objects that trace the spiral arms of the galaxy. The starburst activity of this galaxy began some 100 million years ago and may have been triggered by the collision of a companion galaxy with galaxy NGC 3310.

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