Astronomii au descoperit o «gaură» uriaşă în atmosfera Soarelui
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Urmărește-ne pe DiscoverÎn fapt o zonă cu temperaturi mult mai scăzute decât regiunile înconjurătoare, această "gaură" a apărut în atmosfera superioară a astrului. Aici, vântul solar este extrekm de violent, particulele fiind expluzate în spaţiu la viteze ce depăşesc 500 de mile pe oră.
În imaginile captate de SOHO (Solar and Heliospheric Observatory) regiunea respectivă apare întunecată, din cauza diferenţelor de temperatură.
Astronomii americani spun că "găurile" de acest tip sunt obişnuite în diferite faze ale ciclurilor de activitate ale Soarelui, care durează aproximativ 11 ani.
