When a star dies, its core becomes smaller, gets hotter and the star turns into a red giant. Larger stars collapse, due to their own gravity, and become supernova.Know More
Because stars run on hydrogen, the hydrogen fuses and gets turned into helium. This causes them to be bright in the sky and burn hot. Eventually, stars run out of hydrogen and the star begins to die. When this happens, the helium begins turning into carbon. As the star cools, it becomes a white dwarf and then a black dwarf.
Large stars go through a similar process when they begin to die, but because they have so much carbon built up, they fuse to heavier elements. These elements cause the star to become heavier, and its gravity causes it to collapse. In time, the star will form a neutron star or a black hole.Learn more about Astronomy
A dead star is a star that has exhausted all its fuel for nuclear fusion and is simply the core of the former star floating through space. The size of the star before it uses up all its fuel determines what happens to it afterward.Full Answer >
The North Star, also known as Polaris, is actually a triple star system. The largest and by far most prominent star in the system, Polaris A, possesses a mass six times that of the sun and boasts a diameter of about 38 million miles.Full Answer >
When the temperature of a protostar rises higher than 10,000,000 K, it becomes a true star. At this temperature, hydrogen fusion begins to happen. Fusion heats the star, contracts the core and causes the star to emit light. A protostar must have 0.08 solar masses to become a star.Full Answer >
A supernova is a star that ends its existence by exploding and leaving behind a neutron star or a black hole. All of the heavy matter and large amounts of many elements in the universe were produced by supernovas. All human bodies contain some of these elements.Full Answer >