Which of the following describes the way that ring galaxies are believed to form?
A)when two galaxies of different sizes collide along a direction perpendicular to the larger galaxy's disk
B)when two spiral galaxies collide,along a direction parallel to one galaxy's disk
C)when two elliptical galaxies collide at a position offset from their centres
D)when more than two galaxies collide at the same time, along a straight line

Question

Quizplus · Accepted Answer

Ring galaxies are believed to form when a smaller galaxy collides with a larger galaxy along a direction perpendicular to the larger galaxy's disk. As the smaller galaxy passes through the larger galaxy, the gravitational forces cause gas and dust to compress and form new stars in a ring-like shape.

Options B, C, and D are incorrect as they describe different scenarios of galaxy collisions that do not result in the formation of ring galaxies.

Which of the Following Describes the Way That Ring Galaxies