There are not many planets that provide a human environment. However, astronomers believe that in our galaxy they have found two new planets like the planet. As sciencealert.com announces, these two planets are now among the top 19 exoplanets, possibly with a living environment.
These two planets are located on Teegarden stars, about 8 billion years old. Although it is relatively close to Earth, it was discovered in 2003. The star of Teegarden is a starry star of Aries, and it is only 12.5 light-years from our planet. It is due to the great similarity with the country that it has proved to be a major challenge for research.
Similar research is in most cases done by the transit method. It is used when the orbiting planet passes through the stars. The team prevents the Earth from staring, and the bright heavenly object darkens for a moment.
However, with these planets, the method would not lead to results due to lack of lighting and light, and therefore astronomers used the CARMENES telescope, specially designed for such situations. This tool, located at Calar Alto Observatory in Spain, has enabled researchers to look for changes in the radial speed of stars.
After three years of intense observation and over 200 measurements, astronomers refer to the existence of two new planets, now labeled Teegarden b and Teegarden c.
“Both planets resemble the inner planets of our solar system. They are just a little heavier than Earth and they are so-called. a habitable area where water can be in liquid form, " explain leading factor Mathias Zechmeister, Astrophysics at the University of Göttingen.
Although this does not necessarily mean that both planets are truly living, Zechmeister for The Guardian: “If these planets have an atmosphere, they can be very hospitable to life. These are the first planets found by the radial velocity method. "
Teegarden b is an internal planet and, according to the team, has a 60% chance that its temperature will vary between 0 and 50 ° C. Teegarden c is very similar to Mars temperature and can be about -47 ° C. However, the planets are viable, especially exposure to sunlight and low weight.
But there are not only bright and positive aspects on the planets. Lauren Weiss, astrophysics from the University of Hawaii, who did not participate in this study National Geographic expressed: “There are still some technical details that need to be investigated. The astrologers team predicts that Teegarden b will fill the 4.9-day orbit and Teegarden c in 11.4 days, but it may be much faster. This fact would inevitably reduce their viability. "
"We also don't know how long Teegarden needs to turn around its axis, " more weiss.
Teegarden b has reached the highest score in the country similarity index (ESI). This index shows the similarity of planets with our country. The planet is such an excellent candidate for future research.