Yaks have handlebar horns, shoulder humps, horse-like tails and long shaggy skirts hanging nearly to the ground. Yaks can live up to 20 years and more. Cows average about 600-800 pounds and around 4.5 feet at the hump. Bulls average 1200-1500 pounds but can reach over 1600 pounds.
Brightness of stars is assigned a number starting with the brightest star starting at about -1 magnitude. Dimmer stars are zero or positive numbers. The larger the number means the dimmer the star is. For example, a star -1 magnitude is brighter than a star 0 magnitude. A star 0 magnitude is brighter than a star 1 magnitude. A star 1 magnitude is brighter than a star 2 magnitude. A star 4 magnitude is brighter than a star 5 magnitude. Magnitude sequence for stars starting with the brightest is -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 magnitude, ... etc. The decimal point is not used when star magnitudes are used on a star map. The decimal point could be confused for a star on the map.
SN 1006 supernova remnant. Credit: NASA, ESA, Zolt Levay (STScI) Between April 30 and May 1 of the year 1006, the brightest stellar event ever recorded in history occurred: a supernova, or stellar explosion, that was widely observed by various civilizations from different places on Earth.