Astronomers find another “super-Earth” candidate in off-line star system

Researchers from the University of Canterbury in New Zealand recently discovered another potential candidate for Earth 2, Kepler-62f,media reported. It is reported that the exoplanet is located in the habitable zone of its own star. But there are still many questions to be solved before it is declared fit for life.

Kepler-62f is known to be a rocky planet like ourearth, but it may be larger than Earth and smaller than Neptune. It is located in the habitable zone of its host star — where temperatures allow liquid water to exist on its surface — but its orbit is much slower than Earth’s. In fact, the year on the Kepler-62f is equivalent to more than 600 days a year.

In addition, the star at the center of the planetary system is very small, even compared to our sun. Its mass is only 10% of the sun’s, which seems to explain part of the slow running of kepler-62f in orbit.

For now, people still don’t know the state of the planet’s atmosphere — on the premise that it has an atmosphere, or its surface features. It may just be a dry, burned shell, or it may be covered with water. We don’t know about this yet.

The researchers say they found Kepler-62f thanks to a magical technique called gravitational microlenses.

Dr Herrera Martin, lead author of the study, said: “The combination of the gravitational pull of the planet and its host star has allowed light from more distant backgrounds to be magnified in a special way. We measure this light bending effect by using telescopes around the world. “And to see how rare this probe is, they spent about five days observing the amplification caused by the host star — in fact, the asteroid’s distortion process lasted only five hours.

“After confirming that this was indeed caused by another ‘object’ that was different from its star, rather than an instrument error, we acquired the characteristics of the star-planetary system. “

The study was published in The Astrophysical Journal.