SOLAR SYSTEM

Detailed explanation-1: -Formation. Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula – a spinning, swirling disk of material.

Detailed explanation-2: -The Sun and the planets formed together, 4.6 billion years ago, from a cloud of gas and dust called the solar nebula. A shock wave from a nearby supernova explosion probably initiated the collapse of the solar nebula.

Detailed explanation-3: -4.5 billion years ago: Mercury, Venus, Earth, and Mars form.

Detailed explanation-4: -Over the next 600 million years, called by geologists the Hadean Era, the sun and the planets were formed, and Earth’s oceans were probably created by cometary impacts.