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- A Giant Gas Cloud. A star begins life as a large cloud of gas. The temperature inside the cloud is low enough for molecules to form. Some of the molecules, such as hydrogen, light up and allow astronomers to see them in space.
- A Protostar Is a Baby Star. As the gas particles in the molecular cloud run into each other, heat energy is created, which allows a warm clump of molecules to form in the gas cloud.
- The T-Tauri Phase. In the T-Tauri stage, a young star begins to produce strong winds, which push away the surrounding gas and molecules. This allows the forming star to become visible for the first time.
- Main Sequence Stars. Eventually, the young star reaches hydrostatic equilibrium, in which its gravity compression is balanced by its outward pressure, giving it a solid shape.
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Star Stage is a half-hour American television anthology series that began on September 9, 1955, and ended on September 7, 1956. It was sponsored on alternate weeks by Chesebrough-Ponds and Campbell Soup Company and hosted by Jeffrey Lynn, who became host on the November 18 telecast. Thirty-nine episodes aired on NBC.
Part of: Stars. Life Cycle of Stars. Star Formation. Star Death. Stellar Evolution. Black Holes. All stars form in nebulae, which are huge clouds of gas and dust. Though they shine for many thousands, and even millions of years, stars do not last forever.
Webb is addressing several key questions to help us unravel the story of the star and planet formation: How do clouds of gas and dust collapse to form stars? Why do most stars form in groups?
Our Sun is roughly midway through its main sequence stage. A star’s gas provides its fuel, and its mass determines how rapidly it runs through its supply, with lower-mass stars burning longer, dimmer, and cooler than very massive stars.
Jan 15, 2023 · Stage 1: A Giant Cloud of Gas. Above: The Helix Nebula, located 700 lightyears away from Earth. Image Credit: NASA. Stars begin their life cycles as clouds of gas and dust within a vast expanse of stellar debris called a nebula, formed from the gas and dust expelled by the explosion of a dying massive star.
Star formation and evolution. stellar evolution. Throughout the Milky Way Galaxy (and even near the Sun itself), astronomers have discovered stars that are well evolved or even approaching extinction, or both, as well as occasional stars that must be very young or still in the process of formation. Evolutionary effects on these stars are not ...
