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.
The Siberian tiger is the largest subspecies. Males weigh 180 to 306 kg (397-675 lb.), and females weigh 100-167 kg (221-368 lb.). (1)   b. Bengal tigers are slightly smaller, with males weighing 180 to 270 kg (397-595 lb.) and females weighing 100 to 160 kg (221-353 lb.). tiger's body is built for capturing and killing large prey through stealth and sudden attack. (2)   2. Powerful limbs and a flexible backbone enable tigers to quickly chase and catch prey over short distances. Tigers can cover up to 10 m (33 ft.) in a single leap.