Exoplanet has a stable axis like the Earth

From Popular Mechanics

Of all the exoplanets, planets outside Earth's solar system, discovered in recent years, Kepler-186f is the one that has attracted the most attention. It is often described as one of the "most terrestrial" of all exoplanets discovered and a new study comes to add to the case.

A new look at the axial tilt of Kepler-186f, also known as skew, is stable as the Earth. . Having a stable axial inclination means that the planet probably has both a stable climate and changing seasons. Obtaining a stable axial inclination as a planet is a complex undertaking, which involves the relationship of a planet with its parent star, its twin planets in its solar system, and even its moons. Axial tilt is crucial for the success of a planet, as an unstable tilt could have made Mars uninhabitable for life

<p class = "canvas-atom canvas-text Mb (1.0 em) Mb (0) – -sm Mt (0.8em) – sm "type =" text "content =" Georgia Tech researchers have studied the relationship between Earth and Mars to better understand Kepler-186f Both planets interact strongly with each other, and therefore their only axial inclinations may become wobbly, but the Earth's Moon keeps the Blue Planet under control, keeping the tilt stable.The Earth's Moon is unique in the solar system , the only satellite to have such a stabilizing effect.
"data-reactid =" 25 "> Researchers at Georgia Tech have studied the relationship between Earth and Mars to better understand Kepler-186f. The two planets interact strongly with each other and, therefore, their axial inclinations alone can become wobbly. However, the moon of the Earth keeps the blue planet in check, keeping the tilt stable. The moon of the Earth is unique in the solar system, the only satellite to have such a stabilizing effect.

Things unfold with some degree of similarity in the Kepler system, where 186f interacts with the Kepler-62f exoplanet. Kepler-62f was considered the Earth's closest exoplanet until the discovery of 186f in 2014.

<p class = "canvas-atom canvas-text Mb (1.0em) Mo ( 0) – sm Mt (0.8em) –sm "type =" text "content =" "It would seem that the two exoplanets are very different from Mars and Earth because they have a weaker connection with their Twin planets We do not know if they have moons, but our calculations show that even without satellites, the Kepler-186f and 62f spin axes would have remained constant over tens of millions of years. ", says Gongjie Li, professor at the head of the study, in a press release
" data-reatid = "27"> "It seems that the two exoplanets are very different from Mars and the Earth because they have a weaker connection with their twin planets.We do not know if they own moons, but our calculations show that even without satellites, the Kepler-186f and 62f spin axes would have remained constant over tens of millions of years. "says Gongjie Li, a professor who led the study, in a press release.

There are many scientists who do not know both planets. While 186f has a radius greater than the Earth and it orbits around its star every 130 days, scientists still do not know its mass, composition or density. We also do not know if the planets have water on them, although they each make good candidates.

This study adds to this suggestion

"Our study is among the first to study the climatic stability of exoplanets." I do not think we sufficiently understand the origin of life for exclude the possibility of their presence on planets in irregular seasons. Even on Earth, life is remarkably diverse and has shown incredible resilience in extraordinarily hostile environments. But a climate-stable planet could be a more comfortable place to start, "says Yutong Shan, a graduate student, who also worked on the study.

There has been a huge increase in the discovery of exoplanets in recent years. The namesake of these different planets, the Kepler Space Telescope, and now that its eventual replacement, TESS, has been launched, it is highly likely that others will be discovered in the future.

Source: Georgia Tech

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