Mariah Carey is paying tribute to Martyn Hett, a popular social media personality, who was killed during a tragic suicide bombing at an Ariana Grande concert in Manchester, England, earlier this week.

Carey took to Instagram to pay tribute to Hett, posting a heartfelt message alongside a photo of her young fan wearing a shirt featuring the cover of her 1999 album Rainbow.

"Devastated to learn that one of the victims in Manchester was part of the #Lambily," the pop icon wrote, referring to a term for her collective fanbase. "RIP Martyn Hett. We will cherish your memory forever. His family and all the families affected are in my thoughts and prayers."emerged.

The LHC operations have been so trouble-free that at the start of this month CERN scientists were able to switch to colliding lead ions, creating temperatures a million times hotter than at the heart of the Sun.

The ion collisions, creating an amalgam dubbed a quark-gluon plasma, give the research teams another way of looking at what happened within a nano-second of the Big Bang and at the first matter produced by that mighty explosion.

CERN scientists say they have already taken research with ions further than those with gold at the long-established Relativistic Heavy Ion Collider at the U.S. Brookhaven National Laboratory on Long Island.

These experiments have shown the power of the link-up of 140 computing centers around the world known as the Grid which processes the vast amounts