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.
1. VY Canis Majoris. VY Canis Majoris is a red hypergiant in the constellation Canis Major. It is the largest known stars by radius and also one of the most luminous of its type. Itâs radius is approximately 1,540 times bigger than the Sun and 25 times more mass then Sun. It is around 270,000 times brighter than the Sun.