Did Earth once have two Moons?

The two sides of the Moon look nothing like each other: the near side is flat and low, while the far side is incredibly mountainous. We may now be able to solve this topographical mystery...and it involves a second moon. » 8/03/11 4:30pm 8/03/11 4:30pm

The colliding Antennae galaxies create 500,000 light-years of chaos

Two mighty galaxies far away are smashing into each other, as vast trails of gas and dust mix and merge into what will ultimately be a single galaxy. And the fury of the Antennae extends far from the collision itself. » 5/01/11 12:15pm 5/01/11 12:15pm

Undeterred by Time-Traveling Saboteurs, the LHC Begins Colliding

Take that, bread-dropping bird. Despite numerous delays and the suggestion that the Large Hadron Collider is being sabotaged from the future, the LHC is up and running. And, for the very first time, it has collided two proton beams. » 11/23/09 1:39pm 11/23/09 1:39pm

The Large Hadron Collider Will Gobble Up The Earth (Or Maybe Just…

The Large Hadron Collider at the CERN research facility near Geneva, Switzerland won't be going on a luau in Hawaii anytime soon, since the state is suing to stop the activation of the enormous research project. Yes, it's not just individual wackos who believe the LHC will unleash a cosmic ass-whooping on the planet.… » 4/14/08 3:00pm 4/14/08 3:00pm