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 / Amur tiger (Panthera tigris altaica) 1  Body length with the tail: 150-330 cm (4ft 11in â 10 ft 10 in); females to 270 cm (8ft 10in). 2  Tail length: 90-100 cm (2ft 11 in â 3ft 3.4 in) 3  Height at shoulders: 90-110 cm (2ft 11 in â 3ft 7.3in)