On repeated occasions, many specialists in the field of Astronomy have pointed out the possible existence of a second Earth, and this hypothesis began to take shape after a group of scientists had discovered a twin star to the Sun. Located 184 light years away, the star in question bears the same characteristics as our own.
According to a recent a study, published in Astronomy & Astrophysics, if this star is not twin of the Sun, it is at least its lost brother. The authors detail that about 4,600 million years ago thousands of stars were formed in the same massive cumulus than the Sun. But with the passage of time, these stars dissolved and dispersed throughout our galaxy making it impossible to find them. However, the team led by researcher Vardan Adibekyan, of the Institute of Astrophysics and Sciences of Espaço (IA, Portugal), used an innovative method to detect the “solar brothers”.
“As there is not much information about the Sun’s past, studying these stars can help us understand where in the Galaxy and under what conditions the Sun was formed,” says Adibekyan.
The team of scientists relied on very high quality data that were collected by the GAIA mission of the European Space Agency (ESA) to perform a calculation of the age of these stars and their properties.
Although only one “brother” was found in this investigation, the one called HD186302, a star whose main sequence is of the G3 type, is so similar to the Sun that it could be said to be its twin.
This finding awakened the theory about the possible existence of life on another planet, since according to those responsible for this study, there is a “not negligible” probability that life could exist on other planets or exoplanetary systems.