Question

as matter collapses in on itself due to gravity, it becomes very dense. this causes the pressure and temperature to drastically increase, forming a protostar. as the protostar gathers more matter via gravity, its internal pressure and temperature can become extreme enough for hydrogen atoms in its core to fuse together to form helium atoms. thus, a new star is born.
new stars are actively forming within the pillars of creation of the eagle nebula over 6,000 light - years away from earth.
after a new star forms, it is still surrounded by a large cloud of gas and dust. this cloud rotates around the new star and flattens into a protoplanetary disk. over time, the new star absorbs most of the disk’s nearby matter, while the more distant matter condenses into clumps with greater masses and densities than those of surrounding objects.
planets begin to form within the protoplanetary disk of gas and dust surrounding a newly formed star.
gravity can pull these clumps of dust, ice, and rocks together to form comets, asteroids, or the building blocks of planets and moons. these objects’ gravitational influences increase as they gain more matter and become more massive. eventually, planets and moons can form, and the protoplanetary disk can become a new planetary system. this is the process by which the solar system formed.
match the terms to their descriptions.
protopar
star
gravitational collapse
nebula
protoplanetary disk
a hot, dense celestial object formed when a cloud of gas and dust collapses in on itself due to gravity
the inward contraction of a cloud of gas and dust as it gets more massive and its gravity increases
a flattened, rotating cloud of gas and dust surrounding a newly formed star, from which comets, asteroids, and planets can form
an extremely hot, dense celestial object with high enough core temperature and pressure for hydrogen atoms to fuse into helium atoms
a large, cloud - like structure in space—mostly made of gas and dust—from which stars can form

Explanation:

1. prototar: La descripción "A hot, dense celestial object formed when a cloud of gas and dust collapses in on itself due to gravity" coincide con la definición de protostar (prototar en el texto, probablemente un error de escritura).
2. gravitational collapse: "The inward contraction of a cloud of gas and dust as it gets more massive and its gravity increases" describe la contracción gravitacional.
3. protoplanetary disk: "A flattened, rotating cloud of gas and dust surrounding a newly formed star, from which comets, asteroids, and planets can form" es la definición de protoplanetary disk.
4. star: "An extremely hot, dense celestial object with high enough core temperature and pressure for hydrogen atoms to fuse into helium atoms" es la definición de star.
5. nebula: "A large, cloud - like structure in space - mostly made of gas and dust - from which stars can form" es la definición de nebula.

Answer:

• protostar: A hot, dense celestial object formed when a cloud of gas and dust collapses in on itself due to gravity
• gravitational collapse: The inward contraction of a cloud of gas and dust as it gets more massive and its gravity increases
• protoplanetary disk: A flattened, rotating cloud of gas and dust surrounding a newly formed star, from which comets, asteroids, and planets can form
• star: An extremely hot, dense celestial object with high enough core temperature and pressure for hydrogen atoms to fuse into helium atoms
• nebula: A large, cloud - like structure in space - mostly made of gas and dust - from which stars can form