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High pressure in a nebula can lead to increased gravitational forces, which may compress the gas and dust within it, potentially reducing its overall size. This compression can trigger processes such as star formation, as regions of higher density collapse under their own gravity. Consequently, regions within the nebula may become more compact, while the nebula as a whole could appear smaller as material coalesces into new stellar bodies.

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What force causes a nebula to become a star?

Gravitational attraction pulls gas and dust together in a nebula, causing it to condense and heat up. When the pressure and temperature in the core of the nebula become high enough, nuclear fusion reactions begin, initiating the process of becoming a star.


What is the connection between pulsars and the Crab Nebula?

Pulsars were discovered in the Crab Nebula, a supernova remnant, in 1967. The Crab Pulsar is a neutron star at the center of the nebula that emits beams of radiation, producing regular pulses of light. The high-energy particles and magnetic fields in the nebula power the pulsar's emission.


What is the dangerous thing about a nebula?

One danger of a nebula is the presence of high-energy radiation and cosmic rays that can be harmful to spacecraft and electronic equipment. Additionally, the gas and dust in a nebula can obscure visibility for astronomers and space missions.


What does a nebula contain of high density?

A nebula of high density contains mostly gas and dust particles. As gravity causes these particles to clump together, they can eventually form stars or other celestial bodies. High-density nebulae are often stellar nurseries where new stars are born.


Is the end life of a planetary nebula a high mass or low mass star?

The end life of a planetary nebula is typically associated with low mass stars. These stars eventually shed their outer layers to create a planetary nebula as they transition to the white dwarf stage of their evolution. High mass stars, on the other hand, end their lives in supernova explosions.