The sun is not a special case, but very average.
Reading aloud Our sun is quite a normal star overall. There are no peculiarities that enable the creation of life only on a planet of our solar system. Thus, life in space could be more widespread than thought. As argued Charles Lineweaver of the Australian National University in Canberra: The vast majority of properties of the sun are the average, explains the researchers and thus contradicts the common opinion of many scientists who looked in the characteristics of the sun primarily for the particular. The Sun is the only known star encircled by a life-populated planet. For this reason, researchers have so far suspected that it is something special. In fact, there are two properties that stand out in the sun: it circles around the center of the Milky Way in a particularly circular orbit and is heavier than 95 percent of the neighboring stars.

In their study, Lineweaver scientists studied eleven features of stars, including mass, age, rotational speed, and distance from the center of the galaxy. The statistical comparison with the sun revealed their averageity: A randomly chosen other star is only average with a probability of one to three.

For the existence of habitable planets in the orbit of a star, there is therefore no special need, concluded the research team. However, the orbit of such a planet must have a defined distance to the star and lie within the so-called "life zone", where the temperatures are neither too high nor too low.

New Scientist, online service ddp / science.de? Michael Böddeker advertisement

© science.de

Recommended Editor'S Choice