How old is the world?
Our world has existed since time immemorial. Every schoolboy knows this. Billions of years on Earth there is a life that develops and changes over time. How many years of the world really, we will tell in this article.
How old is our universe
Since the Big Bang, namely this dateserves as a record of the beginning of the life of our universe, has passed about 14 billion years, but this figure is quite relative. In general, scientists hold the view that our universe exists at least 12, but not more than 20 billion years. It should be noted that our universe is older than the Sun and Earth at least 2 times.
How old is our solar system
According to the generally accepted hypothesis,the formation of our solar system began about 4.6 billion years ago. This process began with the gravitational compression of some part of the huge interstellar gas-dust cloud. Most likely this cloud was a few light years in size. It became the progenitor for several stars, including our Sun.
How old is our planet
The age of the Earth is slightly less than the age of ourThe solar system is about 4.54 billion years old. These data were obtained by radioisotope dating of terrestrial samples and meteoritic matter. They were obtained with the help of the uranium-lead method, which was developed by Claire Patterson. This figure corresponds to the age of the oldest terrestrial, lunar and meteorite samples and has not changed since 1956.
How old is mankind
There are several theories that count the different ages of mankind. Let's consider some of them:
- A reasonable man. If we consider the origin of humanity since the appearance of the species Homo sapiens, then according to scientific studies, its age ranges from 200 to 340 thousand years. That is, humanity is quite young.
- Homo genus. As mentioned above, the species of the Intelligent is relatively young, but the genus Homo, which includes the Man of the Skillful, exists approximately 2.5 million years. It was this age that scientists established by examining the skull of a teenager from Tanzania, discovered in the Olduvai gorge in 1960.
- Creationism. The theory of creationism was and remains the main competitor of the theory of evolution. According to her, all life on Earth, including man, was created approximately 7,5 thousand years ago.
If you want to know more about the age of the Earth, read our article How old is the Earth.