M Class Planets May Be Common?

[ImperialOne]

http://news.yahoo.com/s/nm/20080616/...ace_planets_dc

Fascinating.

[Evan van Eyk]

Don't want to spoil your fun, but earth-like planets are not "M-Class". Current technology cannot determine the exact composition of planets, because visual detection would be necessary for that ( spectroscopy ). "Earth-like" planets means they are terrestial, which refers to the composition and density of the planet. They are no gas-giants, but solid planets. Pluto is also no terrestial planet, because of a fewer density.

[The Tatterdemalion King]

On the other hand...