Astrophysicists have believed that half the elements which are heavier than iron were formed in gigantic star explosions, known as supernovas. However, there is one little snag with this theory: Astrophysicists have huge problems to make computer simulations of a supernova. âA supernova is extremely complicated.
Siberian Tiger Description. The Siberian Tiger can grow almost 11 feet in length. The males can weigh up to 660 pounds and they are larger than the females. This subspecies of tiger has a skull that is much larger than the others. The skull of the male is quite a bit larger than that of the female.
Siberian Tiger. Panthera tigris altaica. The Siberian tiger, a subspecies of tiger, is the largest cat in the world. It averages about 3.3 m (11 ft.) in length, with a tail measuring 1 m (3 ft.). Adult male Siberian tigers can weigh up to 320 kg (700 lb.), while females are significantly smaller, weighing up to 180 kg (400 lb.).