High-mass stars
Both white dwarfs and neutron stars are extremely dense remnants of the collapsed cores of dead stars.
It's the process that takes place in the cores of stars, creating heavier elements out of lighter ones, and liberating nuclear energy that leaves the stars in the form of electromagnetic radiation.
Stars are hotter than planets. Stars are massive balls of gas that produce heat and light through nuclear reactions in their cores, while planets do not produce their own heat and rely on the heat they receive from the star they orbit.
Most stars in the universe are main sequence stars. These stars are in a stable phase of their life cycle where they generate energy through nuclear fusion in their cores. The Sun is a main sequence star.
No, stars are gaseous. More precisely, they are so hot that their matter is in a state known as "plasma".
Basically all stars do that.
Stars are primarily composed of hydrogen and helium, with smaller amounts of heavier elements. They generate energy through nuclear fusion in their cores, where high temperatures and pressures cause hydrogen atoms to fuse into helium, releasing energy in the process. Stars also have a structure that includes layers like the core, radiative zone, convective zone, and outer atmosphere.
There are two reasons why red dwarf stars spend the longest time in the main sequence. First, due to lower internal pressure and temperature, red dwarfs consume their fuel much more slowly than larger stars. Second, unlike other stars, red dwarfs are fully convective, which means they are not just limited to the hydrogen in their cores.
Carbon is formed in the cores of stars and distributed into space during the death of stars.
The cores of stars and hydrogen bombs.
In the cores of stars and hydrogen bombs.
Oxygen is made all the time in the cores of stars.
Oxygen was created by fusion in the cores of stars and distributed through the universe when those stars exploded.
Gold is an element that is formed in the cores of stars; it is not organic and does not grow.
Like most elements, selenium was formed in the cores of stars.
Both white dwarfs and neutron stars are extremely dense remnants of the collapsed cores of dead stars.
Stars generate light by nuclear fusion. That happens in their cores, but the outer layers glow with it.