50 trillion planets can contain life in the universe

The planets that are close enough to the stars for liquid water to exist are potential candidates that can nourish life.

Humans have not yet developed an advanced tool to predict life appearing on planets in the universe except for Drake equation . This is a mathematical formula proposed by American astronomer Frank Drake, allowing scientists to estimate how many extraterrestrial civilizations, according to Business Insider.

Many planets in the universe exist conditions that support life development.(Photo: Pcwallart).

This equation includes many factors such as the rate of star formation, the probability of star having the planet around, the probability of life developing, the average time a civilization signals into space.The only drawback of Drake equation is that it is impossible to give an absolute correct answer.

Using the Drake equation, scientists estimate that there are about 50 trillion planets in the universe that meet the conditions for life. In our Milky Way, there are also about 60 billion planets in the habitable zone around the star.

According to this formula, the first important factor for a planet to nourish life is liquid water . Water on the surface of these planets must be warm enough to exist in liquid form and not too hot to be converted to gaseous form.

Water also dissolves and transports chemicals, creating important metabolic reactions. The planet also needs energy that is not too hot or too cold from the star and many other chemical reactions to form and sustain life. A planet with a water cycle, an active atmosphere or volcano will supplement and circulate nutrients better.