la notizia sembra di quelle importanti ma non troppo. Cmq se Plutone è un pianeta vero e proprio a buon diritto può esserlo anche Sedna... stando a quanto dice la BBC domani l'annuncio.
Quote:
http://news.bbc.co.uk/1/hi/sci/tech/3511678.stm
Astronomers have discovered a new world circling the Sun farther away than other planets.
Found in an outer Solar System survey by the recently launched Spitzer Space Telescope, it has been called Sedna after the Inuit goddess of the ocean.
Observations show it is about 2,000 km across, and it may even be larger than Pluto which is 2,250 km across.
The Hubble Space Telescope has also seen it. Details will be announced by the US space agency Nasa on Monday.
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