Nebulae can last for millions to billions of years, depending on their size and composition. Some may dissipate relatively quickly, while others can persist for vast cosmic timescales. The life span of a nebula is largely determined by the processes of star formation and stellar evolution within it.
The lifespan of a nebula can vary significantly depending on its type and the processes occurring within it. For instance, a star-forming nebula can last for millions of years as it gradually converts gas and dust into new stars. In contrast, a planetary nebula, which represents the late stages of a star's life, may exist for only a few tens of thousands of years before dissipating. Ultimately, the "death" of a nebula is a gradual process influenced by internal dynamics and external factors, making it difficult to pinpoint an exact timeframe.
A star life cycle takes millions of years. Some stars even last for billions of years, which can be older than our universe.
A star does not "stay" in a nebula; rather, it forms within a nebula. A nebula is a vast cloud of gas and dust where star formation occurs, and the process can take millions of years. Once a star forms, it will eventually evolve and leave the nebula, transitioning into different stages of its lifecycle, such as a main-sequence star, red giant, or supernova, depending on its mass. Thus, a star is only associated with a nebula during the initial stages of its formation.
Emission nebula glow and reflection nebula reflect the light form other stars
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A stellar nebula can exist for millions to billions of years, depending on the size and mass of the nebula. These nebulae are the birthplaces of stars and can last until all the matter within them has been used up in the process of star formation.
The Crab Nebula or SN1054 is still visible with telescopes.
A star life cycle takes millions of years. Some stars even last for billions of years, which can be older than our universe.
nebula
The Stingray Nebula (Hen 3-1357) is a planetary nebula. (The youngest known).
The nebula in a galaxy is a dead star, long dead, possibly about to turn into a black hole. actually, its the opposite: nebula is like a cloud of space trash. when the "cloud" gets too big, it explodes. the bigger the explosion, the bigger the new star.
1344 years
"The Crab" is a nebula.
a type of nebula
A cloud in outer space consisting of gas or dust and planetry nebula is one of the types also called ring nebula or A planetary nebula is an emission nebula consisting of a glowing shell of gas
The Helix Nebula is a planetary nebula located in the constellation Aquarius, while the Ring Nebula is a planetary nebula located in the constellation Lyra. The Helix Nebula appears more like a disk or helix shape, while the Ring Nebula appears as a ring or donut shape due to its orientation.
Emission nebula glow and reflection nebula reflect the light form other stars