(September 22, 2012 at 10:46 am)Stimbo Wrote: 69 would be more relevant.
(September 21, 2012 at 12:22 pm)Simon Moon Wrote: 2 in every 25 stars are class m (like the sun). That would be a minimum of 2 billion class M planets in our galaxy alone.
The Sun (or Sol) is actually a class G2 yellow dwarf. All this class M stuff is fallout from Star Trek.
Wasn't "class m" reserved to planets with an Oxygen-Nitrogen atmosphere, close to our Earth?