By ALEXANDER G. HIGGINS

GENEVA

The world’s largest atom smasher has recorded its first high-energy collisions of protons, a spokeswoman said Wednesday.

Physicists hope those collisions will help them understand suspected phenomena such as dark matter, antimatter and ultimately the creation of the universe billions of years ago, which many theorize occurred as a massive explosion known as the Big Bang. Read the full story

The operators of the Large Hadron Collider have successfully sent a beam of protons around the ring of the world’s largest particle collider.

It is the first time the Large Hadron Collider, or LHC, has been operational since September 2008, when an electrical connection in the collider’s magnets melted, causing a tonne of super-cooled liquid helium to leak into the tunnel.

CERN, the European Organization for Nuclear Research, announced the success on Twitter on Friday afternoon ET.

“We have completed the ring!” read the post on the social networking and microblogging site. Read the full story