Jun 7, 2020 04:51 PM
What has it taken -- circa a quarter century of exoplanet research to finally acquire one supporting instance of this territory of the mediocrity principle? Plus, despite the claim, this doesn't sound much like the arrangement of our [actually eccentric if not outright unique] solar system.
https://www.airspacemag.com/daily-planet...180975047/
EXCERPTS: An international research group led by René Heller from the Max Planck Institute for Solar System Research in Göttingen, Germany, claims to have found a star-exoplanet pair closely resembling the Sun-Earth system, based on their statistical data analysis. This distant solar system circles the star Kepler-160, a G dwarf star like our Sun located about 3,000 light years from Earth.
[...] The new planet has ... an orbit that would allow the presence of liquid water on its surface. The planet completes an orbit around its host star in 378 days, very close to Earth’s year of 365.25 days. KOI 456.04 is a bit less than twice the size of our own planet. ... The surface temperature of the host star is about 300oC less than our Sun, and if the planet is not too massive ... then surface temperatures on the newly discovered planet may still be rather benign.
[...] This study is very significant, because nearly all the small exoplanets ... discovered to date ... orbit ... Red Dwarfs, emit high-energy flares early in their life cycle ... and ... are likely to be tidally “locked...” More luminous K or G dwarf stars (like our Sun) are therefore more suitable for hosting life-bearing planets. While some of the properties [...are....] similar to the Sun and Earth, the overall system is actually quite different. Two of the three inner planets are substantially bigger than Earth, and one is as large as Neptune. ... the discovery by Heller and colleagues has to be confirmed, either with ground-based telescopes or with the PLATO space telescope ... But even though there are still a lot of “ifs,” it shows that we are (slowly) edging closer to finding an Earth 2.0 circling a Sun 2.0. (MORE - details)
https://www.airspacemag.com/daily-planet...180975047/
EXCERPTS: An international research group led by René Heller from the Max Planck Institute for Solar System Research in Göttingen, Germany, claims to have found a star-exoplanet pair closely resembling the Sun-Earth system, based on their statistical data analysis. This distant solar system circles the star Kepler-160, a G dwarf star like our Sun located about 3,000 light years from Earth.
[...] The new planet has ... an orbit that would allow the presence of liquid water on its surface. The planet completes an orbit around its host star in 378 days, very close to Earth’s year of 365.25 days. KOI 456.04 is a bit less than twice the size of our own planet. ... The surface temperature of the host star is about 300oC less than our Sun, and if the planet is not too massive ... then surface temperatures on the newly discovered planet may still be rather benign.
[...] This study is very significant, because nearly all the small exoplanets ... discovered to date ... orbit ... Red Dwarfs, emit high-energy flares early in their life cycle ... and ... are likely to be tidally “locked...” More luminous K or G dwarf stars (like our Sun) are therefore more suitable for hosting life-bearing planets. While some of the properties [...are....] similar to the Sun and Earth, the overall system is actually quite different. Two of the three inner planets are substantially bigger than Earth, and one is as large as Neptune. ... the discovery by Heller and colleagues has to be confirmed, either with ground-based telescopes or with the PLATO space telescope ... But even though there are still a lot of “ifs,” it shows that we are (slowly) edging closer to finding an Earth 2.0 circling a Sun 2.0. (MORE - details)