pickles
A nebula does not directly turn into a white dwarf. A nebula will collapse to form stars. Low to medium mass stars become white dwarfs after they die. Some are the result of a supernova and do not collapse, they merely dissipate over time. The Crab Nebula is the most prominent example of this.
List some events that can disturb the equilibrium of a nebula and cause it to being to
A black hole is a collapsed star that does not let light escape. A nebula is a mass of gas and dust that may collapse to form a star. A red giant is a star that has expanded and cooled. A white dwarf is an old, dense, cool star.
Low mass
the high mass star's core collapse because its gravity
A nebula does not directly turn into a white dwarf. A nebula will collapse to form stars. Low to medium mass stars become white dwarfs after they die. Some are the result of a supernova and do not collapse, they merely dissipate over time. The Crab Nebula is the most prominent example of this.
A disk
List some events that can disturb the equilibrium of a nebula and cause it to being to
A black hole is a collapsed star that does not let light escape. A nebula is a mass of gas and dust that may collapse to form a star. A red giant is a star that has expanded and cooled. A white dwarf is an old, dense, cool star.
nebula
the air becomes dense and it sinks
Supernova: An explosion of stars Neutron star: The dense remains of a star Nebula: A large mass of gas and dust Apex :)
Stars usually begin their lives in stellar nurseries: (relatively) dense clouds of interstellar gases. Critical densities may be achieved when nearby stars go nova, at which time pockets in the nebula collapse under their own weight to form a protostar. If the mass of the protostar is sufficient, further gravitational collapse will cause the temperature and pressure in the core to rise to the point where hydrogen starts to fuse. At that point, a star is born.
All bodies that have mass, have gravity. The Helix Nebula is a large planetary nebula and will have "loads" of gravity.
Low mass
the high mass star's core collapse because its gravity
the high mass star's core collapse because its gravity