'(<a href="http://www.j-archive.com/media/2008-04-15_DJ_14.jpg" target="_blank">I'm astrophysicist Neil deGrasse Tyson.</a>) Some with billions, others with trilions of stars, these are the fundamental building blocks of visble matter in the universe; they come in many varieties including spiral, irregular & elliptical'
galaxies
ASTRONOMY: Some with billions, others with trilions of stars, these are the fundamental building blocks of visble matter in the universe; they come in many varieties including spiral, irregular & elliptical
Some with billions, others with trilions of stars, these are the fundamental building blocks of visble matter in the universe; they come in many varieties including spiral, irregular & elliptical
Some with billions, others with trilions of stars, these are the fundamental building blocks of visble matter in the universe; they come in many varieties including spiral, irregular & elliptical
ASTRONOMY
galaxies
ASTRONOMY