The universe has many planets like Earth

A recent study by American astronomers demonstrated that Earth-like planets - meaning not too hot and too cold for life to develop - are quite common in the universe.

Experts at Northwestern University, Illinois, USA use the latest data on 300 planets orbiting stars to build models of planetary formation, including the solar system. our.

The large-scale models of the team have for the first time reconstructed the process of forming planets around a star. They are made up of disks of gas and dust left behind by the formation of the central star. From those physical disks, a full planetary system was born. Previous models provided only basic information about the causes of planet formation.

The first stage in the formation of planetary systems takes place in chaos and violence. The giant gas disk forms planets, but then pushes them toward the central star, where they cluster into groups. A fierce competition among the growing planets takes place. They race to "swallow" gas and dust to bulge. This process creates a variety of sizes of planets.

As planets approach each other, gravity forces them to "lock" in elliptical orbits. The perimeter of the giant ellipses increases with time, until they are able to "throw" the planets to many places in the universe. It is very likely that the Earth has experienced the same situation.

Professor Edward Thommes, a member of the research team, asserts that the planets in which the rock occupies most of the surface like the Earth have many favorable conditions to survive. He thinks they appear everywhere in the universe.