RAVENCLAWS: *find the key*
SLYTHERINS: *pick the lock*
GRYFFINDORS: *kick it down
This has been a brief description of the Hogwarts houses.
The perfect spiral
M74 is a spiral galaxy of of about 100 billion stars, 32 million light-years away toward the constellation Pisces. The galaxy presents a beautiful, almost perfect view of its spiral arms. The red areas are star forming regions where young stars are born.
Image credit: NASA ESA
Thomas Wright, An original theory of the universe, 1750. London. Via Linda Hall Library
1 cross section of the model of the Milky Way galaxy. 2 Multiple solar systems with comets. 3 The symbolic eye of Deity in all star systems: A finite View of Infinity. 4 The first depiction of multiple galaxies in a book