- KOCHAB (Beta Ursae Minoris). Kochab, an obscure Arabic name that might simply mean “star,” is just barely the second brightest and thus appropriately the Beta star in Ursa Minor, the Smaller Bear, and represents the top front bowl star of the Little Dipper.
- Aluminium (Wikipedia)
Aluminium (Aluminum in North American English) is a chemical element; it has symbol Al and atomic number 13. Aluminium has a density lower than that of other common metals, about one-third that of steel. It has a great affinity towards oxygen, forming a protective layer of oxide on the surface when exposed to air. Aluminium visually resembles silver, both in its color and in its great ability to reflect light. It is soft, nonmagnetic, and ductile. It has one stable isotope, 27Al, which is highly abundant, making aluminium the twelfth-most common element in the universe. The radioactivity of 26Al, a more unstable isotope, leads to it being used in radiometric dating.