Estranged Van Halen co-stars David Lee Roth and Sammy Hagar are set to reunite - in space.

The JUMP rockers have been invited to be part of extraterrestrial research expert MICHAEL LUCKMAN's hotly-anticipated Signal to Space Concert in 2007.

Luckman, the author of ALIEN ROCK: THE ROCK 'N' ROLL EXTRATERRESTRIAL CONNECTION, is approaching music icons who display intergalactic sympathies, including Yes keyboard supremo Rick Wakeman, GRATEFUL DEAD star Jerry Garcia and David Bowie.

The concert will beam a message of peace to outer space - and it may even bring harmony to the troubled Van Halen twosome, according to Lee Roth.

He hints, "The headline could be: 'Aliens Reunite Van Halen, '" adding he would happily communicate with alien life-forms "providing (they) are good-looking".