Afaylu:The violent youth of solar proxies.jpg

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English: Stars similar to our Sun — “solar proxies” — enable scientists to look through a window in time to see the harsh conditions prevailing in the early or future Solar System, as well as in planetary systems around other stars. These studies could lead to profound insights into the origin of life on Earth and reveal how likely (or unlikely) the rise of life is elsewhere in the cosmos. This work has revealed that the Sun rotated more than ten times faster in its youth (over four billion years ago) than today generating a stronger magnetic field and stronger activity. This also meant that the young Sun emitted X-rays and ultraviolet radiation up to several hundred times stronger than the Sun does today.
Français : Les étoiles similaires à notre Soleil permettent aux scientifiques d'observer les conditions qui prévalent à la naissance d'un système planétaire et son évolution dans le futur. De là, on peut avoir une idée du passé de notre système solaire et de son avenir.
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dépeint français

Soleil français

diagramme français

date de fondation ou de création français

16 Jember 2013

type MIME français

image/jpeg

somme de contrôle français

37249605c81bc95db32d40e5513ec83bc5d5194e

méthode de détermination français : SHA-1 français

taille des données français

2 778 354 octet

hauteur français

1 951 pixel

largeur français

4 000 pixel

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