Stars are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements. Every star has its own life cycle, ranging from a few million to trillions of years, and its properties change as it ages. Birth Stars form in large clouds of gas and dust called molecular clouds. See more Astronomers estimate that the universe could contain up to one septillion stars – which in numbers is 1,000,000,000,000,000,000,000,000. Our Milky Way alone contains more than 100 billion, including our … See more Stars form in large clouds of gas and dust called molecular clouds. Molecular clouds range from 1,000 to 10 million times the mass of the Sun and can span as much as hundreds of light … See more At the beginning of the end of a star’s life, its core runs out of hydrogen to convert into helium. The energy produced by fusion creates pressure inside the star that balances gravity’s … See more At first, most of the protostar’s energy comes from heat released by its initial collapse. After millions of years, immense pressures and … See more WebStars are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements. Every star has its own life cycle, ranging from a few million to trillions of years, and its properties change as it ages. Birth Stars form in large clouds of gas and dust called molecular clouds.
What Is the Most Massive Star? Space
WebDec 5, 2012 · The largest extend hundreds of thousands of light-years from one end to the other and dwarf our own galaxy in comparison. The most massive can contain nearly a trillion stars, or about a... WebApr 16, 2024 · If the star is massive enough, the implosion creates a supernova. Smaller stars like the sun contract peacefully into white dwarfs while their outer shells radiate away as planetary nebulae. Supernovae and Planetary Nebulae. A supernova explosion is one of the brightest events in the universe. Most of the star's material is blown into the space ... shari\\u0027s central point oregon
Stars—facts and information - National Geographic
WebThe most massive stars have the most gravity and can thus compress their centers to the greatest degree. This means they are the hottest inside and the best at generating … WebIn a massive star, the weight of the outer layers is sufficient to force the carbon core to contract until it becomes hot enough to fuse carbon into oxygen, neon, and magnesium. This cycle of contraction, heating, and the ignition of another nuclear fuel … WebJan 19, 2009 · Stars that are between 100 and 250 times as massive as the sun are predicted to blow up completely in energetic explosions, and some of the first stars most likely had masses in this range. shari\\u0027s castro valley