The shape of the mysterious cloud of antimatter in the central regions of the Milky Way has been revealed by ESA's orbiting gamma-ray observatory Integral. The unexpectedly lopsided shape is a new clue to the origin of the antimatter.

Full story  :
http://www.esa.int/esaSC/SEMKTX2MDAF_index_0.html

Cool

Did you watch the near-miss asteroid the other day?

Nope...

That's pretty amazing though I don't pretend to understand much of it.

Many sources of γ rays, and the antimatter cause is plausible.  I heard about the asteroid fly-by.  When can we say that it's a near miss, and when is the next visit?