Il "decimo pianeta" più grande di Plutone?

Inbox Astronomy
News, notes and fun from the home of the Hubble Space Telescope

NewsCenter Update - April 11, 2006

Hubble Finds that the ‘Tenth Planet’ is Slightly Larger than Pluto

NASA’s Hubble Space Telescope has resolved the “tenth planet,”
nicknamed “Xena” for the first time, and has found that it is only
just a little larger than Pluto.

See the full release at:

L’articolo originale “Direct measurement of the size of 2003 UB313 from the Hubble Space Telescope”