-The shells indicated in the enhanced visual wavelength image shown above are formed from _____________.
A)quasars
B)mergers of galaxies
C)tides
D)spiral arms

Question

-The shells indicated in the enhanced visual wavelength image shown above are formed from _____________. 
A)quasars 
B)mergers of galaxies 
C)tides 
D)spiral arms

Quizplus · Accepted Answer

Tides are the gravitational forces that act between two objects, causing them to deform. In the case of galaxies, tides can cause the galaxies to merge together, or they can cause the galaxies to form shells.

-The Shells Indicated in the Enhanced Visual Wavelength Image Shown