Csillagrobbanások

Csillagrobbanások, or stellar explosions, are cataclysmic cosmic events that mark the dramatic end of a star's life. The most common type is a supernova, which occurs when a massive star exhausts its nuclear fuel and its core collapses under its own gravity. This collapse triggers a massive outward explosion that can briefly outshine an entire galaxy. Another type of stellar explosion is a nova, a less powerful event that happens in binary star systems where a white dwarf star accretes matter from its companion. When enough material builds up on the white dwarf's surface, it ignites in a runaway nuclear fusion reaction, causing a sudden increase in brightness. These explosions are crucial for the universe as they disperse heavy elements forged within stars into interstellar space, providing the raw materials for new stars, planets, and even life. The remnants of supernovas can form neutron stars or black holes, depending on the mass of the original star. The study of csillagrobbanások helps astronomers understand stellar evolution, the formation of heavy elements, and the dynamics of the universe.