“A thoroughly enjoyable book.” Thanks @seanmcarroll! goo.gl/KDnedg

Intermediate-Mass Black Holes do exist: Pasham et al. estimate M82 X-1 to be 428 ± 105 solar masses goo.gl/iBqOOc HT @GilliCosm

“A brilliant insider’s guide to #darkmatter and beyond” Nice review of “Behind the Scenes of the Universe” book goo.gl/r4qRdt