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Wetenschappers ontdekken mogelijk super-aarde

Geplaatst op 09-04-2008 om 15u51 door Bert Carrein - 2230 keer gelezen
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Een team van Spaanse en Franse astronomen hebben in het Sterrenbeeld Leeuw mogelijk de tot nu toe kleinste planeet bij een op de Zon gelijkende ster ontdekt. Dat hebben wetenschappers rond Ignasi Ribas van de universiteit van Barcelona meegedeeld.

Exoplaneet GJ 436c heeft maar een vijfvoud van de massa van onze eigen planeet en kan ook een gesteenteplaneet zijn. De meeste van de al zowat 300 ontdekte planeten buiten ons zonnestelsel zijn gasreuzen zoals onze Jupiter. Exoplaneet GJ 436c bevindt zich op 30 lichtjaren van ons en omcirkelt een ster die op onze Zon gelijkt.

De astronomen hebben het hemellichaam niet rechtstreeks waargenomen, maar kwamen het op het spoor door de verstoringen die de planeet had op de baan van een andere tevoren ontdekte exoplaneet rond dezelfde ster.

Bron: http://www.hln.be

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