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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.