But we know everything about this planet.
http://news.yahoo.co...-104349304.html
In case yahoo isn't a good enough source:
http://www.bbc.co.uk/news/science-environment-19207810
A huge cluster of floating volcanic rocks covering almost 26,000 square kilometres (10,000 square miles) has been found drifting in the Pacific, the New Zealand navy said Friday.
The strange phenomenon, which witnesses said resembled a polar ice shelf, was made up of lightweight pumice expelled from an underwater volcano, the navy said.
An air force plane spotted the rocks on Thursday about 1,000 kilometres (600 miles) offshore from New Zealand and warned a navy warship that it was heading towards them.

http://news.yahoo.co...-104349304.html
In case yahoo isn't a good enough source:
http://www.bbc.co.uk/news/science-environment-19207810