We're Number One!

[billroper]

In this Guardian article on dark matter, researchers at Cambridge University are quoted as discovering that dark matter comes in chunks at least 1000 light years across of at least 30 million times the mass of the Sun. (Or maybe 30,000 solar masses -- I may have misread the abbreviation.)

However, they also discovered that the Milky Way is the largest galaxy in the local group, not Andromeda. So, as it says above, we're number one!