Scientists explain the fact that we haven't yet found any alien life forms in the visible parts of our Universe with the fact that the Earth was one of the first planets to pass through all of the stages required for the emergence of life. While this process happened relatively quickly here, it is still in its initial phases on other planets.
American researchers believe that the apparent lack of extraterrestrial life so far is that planets similar to ours have not yet had the chance to fully form.
Earth is the only place we know of that has all of the conditions available to produce life. And if there is another such place, following logic and mathematical models, it may very well be on the other end of the Universe.
Scientists have detected the presence of materials heavier than helium and hydrogen in other galaxies using the Hubble Space Telescope. They have attempted to calculate what will happen to the planets found in them over time. The experts compared the information they've gathered with the observations from the Kepler Spacecraft about potential habitable exoplanets.
Results show that Earth is among the 8% of planets that have been lucky enough to form relatively quickly after an immense explosion.
The other 92% are still in the early stages of their development. According to the scientists, they will form completely after about 6 billion years. Only then will there be a chance for life to develop on them.
Our galaxy alone has about a billion planets which have the potential to become Earth-like. Scientists estimate that this number will increase 100-fold.
Everything depends on how each one of them develops over the years. Even though we haven't yet found extraterrestrial life, researchers estimate a 90% chance of its existence, even though it's likely extremely far from us.