SOLAR SYSTEM

Detailed explanation-1: -Earth is estimated to be 4.54 billion years old, plus or minus about 50 million years. Scientists have scoured the Earth searching for the oldest rocks to radiometrically date. In northwestern Canada, they discovered rocks about 4.03 billion years old.

Detailed explanation-2: -ARCHEAN PROTEROZOIC MESOZOIC CENOZOIC4.6 billion years ago: Earth is formed. The moon forms about 100 million years afterwards. 3.5 billion years ago: First evidence of single-celled organisms.

Detailed explanation-3: -Today, we know from radiometric dating that Earth is about 4.5 billion years old.

Detailed explanation-4: -If we take the age of Earth-4.5 billion years-and compress it into one year 144 years would be 1 second! We love celebrating these milestones throughout the year and invite you to celebrate them with us.

Detailed explanation-5: -When did life on Earth begin? Earth is about 4.5 billion years old. Scientists think that by 4.3 billion years ago, Earth may have developed conditions suitable to support life. The oldest known fossils, however, are only 3.7 billion years old.