Which of the following correctly describes the hierarchy that exists in the universe? A galaxy refers to all existing matter, en
ergy, and space that is held together by gravity. A galaxy is a collection of planets, their moons, and other objects in orbit around a central star. A solar system refers to all existing matter, energy, and space that is held together by gravity. A solar system is a collection of planets, their moons, and other objects in orbit around a central star.
A galaxy refers to all existing matter, energy, and space that is held together by gravity
A solar system is a collection of planets, their moons, and other objects in orbit around a central star.
<h3><u>Explanation;</u></h3>
<em><u>The universe contains many galaxies and solar systems.</u></em>
<em><u>A galaxy </u></em>is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. The galaxy that contains the Earth and its solar system is called the Milky Way.
<u>Solar System</u> consists of the stars, the Sun, and its orbiting planets, including the Earth, along with numerous moons, asteroids, comet material, rocks, and dust.
Inverse Square Law Newton proposed the Inverse Square Law. The effect of gravity (and also on forces such as sunlight) works like this. If say we have a half-mass Earth, it would produce a gravity of not half but a quarter (the square of 2).
We know that acceleration can increase depending in the force applied on an object, any object with a greater mass will apply a greater force. F = M(a).
