Definition of thanksgiving for English Language Learners. Thanksgiving : the fourth Thursday in November in the U.S. or the second Monday in October in Canada celebrated as a legal holiday for people to be thankful for what they have.
A galaxy contains stars, gas and dust. In a spiral galaxy like the Milky Way, the stars, gas, and dust are organized into a bulge, a disk containing spiral arms, and a halo.. Elliptical galaxies have a bulge-like central region and a halo, but do not have a disk.
What is there beyond the Milky Way galaxy? Closest, would be the Andromeda galaxy â on a collision course with our Milky Way. And in all directions thereafter, an estimated 125 to 200 billion additional (observable) galaxies, each with 100 to 600 billion stars each â some of the largest comprised of 1 trillion stars or more.