Final answer:
The Sun is the first object to form in our solar system according to the Nebular Hypothesis.
Step-by-step explanation:
The Sun was the first object to form in our solar system according to the Nebular Hypothesis.
The Nebular Hypothesis suggests that our solar system formed from a giant rotating cloud of gas and dust called a nebula. As the nebula collapsed, it formed a hot, dense core known as the protosun, which eventually became the Sun.
The Sun's gravitational pull then caused the remaining material in the nebula to come together and form other objects, such as planets, including Mercury, Earth, and Pluto, as well as the Moon.
Learn more about Formation of our solar system