Question

in its core to fuse together to form helium atoms. thus, a new star is born.
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.
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.
put the steps of the solar system’s formation in the order in which they must have occurred.
first
earth and other planets formed as clumps of dust, ice,
and rock gained mass and pulled in even more matter
due to increased gravity.
matter within the protoplanetary disk condensed into
clumps.
the newly formed protostar gathered matter due to
gravity, which increased its internal pressure and
temperature.
hydrogen atoms in the protostar’s core fused together
to form helium atoms, transforming the protostar into a
star, the sun.
a large cloud of gas and dust left over from the sun’s
formation rotated and flattened.
gravitational collapse occurred in a dense area of gas
and dust within the solar nebula.
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Explanation:

1. The process starts with the initial collapse of a dense region in the solar nebula, which initiates star formation.
2. This collapse forms a protostar, which gathers more matter via gravity, increasing its internal pressure and temperature.
3. When the core pressure/temperature is high enough, hydrogen fuses into helium, creating the Sun (a fully formed star).
4. Remaining gas and dust around the Sun rotate and flatten into a protoplanetary disk.
5. Matter in this disk condenses into small clumps of dust, ice, and rock.
6. These clumps grow by pulling in more matter via increasing gravity, eventually forming planets like Earth.

Answer:

first

1. Gravitational collapse occurred in a dense area of gas and dust within the solar nebula.
2. The newly formed protostar gathered matter due to gravity, which increased its internal pressure and temperature.
3. Hydrogen atoms in the protostar's core fused together to form helium atoms, transforming the protostar into a star, the Sun.
4. A large cloud of gas and dust left over from the Sun's formation rotated and flattened.
5. Matter within the protoplanetary disk condensed into clumps.
6. Earth and other planets formed as clumps of dust, ice, and rock gained mass and pulled in even more matter due to increased gravity.

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