Life on distant moons?

In the search for Earth’s siblings, astronomers often focus on rocky planets, and for good reason: in our Solar System, planets similar to Earth are located only in the habitable zone. But this does not have to be the case in other solar systems. There, gas giants as big as Jupiter or even bigger could be located in the habitable zone of their host star. The habitable zone might even be larger in these systems, because these giant planets could also provide energy to the moons in their orbit.

Researchers now argue in the Astrophysical Journal that such gas giants should not be excluded from the search for life. They have published a list of giant planets that were discovered with the Kepler telescope and whose moons could potentially harbor life. According to the model of our Solar System, it seems likely that these planets have moons – of the 175 currently known moons orbiting the eight planets of our Solar System, the gas giants have 172.

The list, which could be added to in the future by the James Webb telescope, includes a total of 121 gas planets that are all at least three times as large as the Earth. Astronomers have not yet identified a single exomoon with certainty, but there are at least a few candidates.

Artist’s rendering of a life-supporting moon in orbit around a gas giant (picture: NASA GSFC: Jay Friedlander and Britt Griswold)
Artist’s rendering of a life-supporting moon in orbit around a gas giant (picture: NASA GSFC: Jay Friedlander and Britt Griswold)

Leave a Comment

Tu dirección de correo electrónico no será publicada.

BrandonQMorris
  • BrandonQMorris
  • Brandon Q. Morris es físico y especialista en el espacio. Lleva mucho tiempo preocupado por las cuestiones espaciales, tanto a nivel profesional como privado, y aunque quería ser astronauta, tuvo que quedarse en la Tierra por diversas razones. Le fascina especialmente el "qué pasaría si" y a través de sus libros pretende compartir historias convincentes de ciencia ficción dura que podrían suceder realmente, y que algún día podrían suceder. Morris es autor de varias novelas de ciencia ficción de gran éxito de ventas, como la serie Enceladus.

    Brandon es un orgulloso miembro de la Science Fiction and Fantasy Writers of America y de la Mars Society.