A starburst galaxy is a type of galaxy that is experiencing an exceptionally high rate of star formation. This rapid creation of new stars often occurs due to interactions or collisions with other galaxies, which can compress gas and dust, providing the necessary material for star formation. These galaxies are characterized by bright, intense regions where new stars are born, making them appear more luminous than typical galaxies. Examples of starburst galaxies include M82 and NGC 253, which showcase the vibrant activity of star formation in their structures.