ALMA, the world's most powerful telescope for observing molecular gas and dust, studies the building blocks of stars, planetary systems, galaxies and life itself, according to the European Southern Observatory (ESO), its co-operator.The cyberattack forced the suspension of astronomical observations, left the observatory with limited email services, and its website still offline four days later."The threat has been contained and our specialists are working hard to restore affected systems," said the ALMA tweet."Given the nature of the episode, it is not yet possible to estimate a date for a return to regular activities," it added.The ALMA telescope boasts 66 high-precision antennas spread over distances of up to 16 kilometers (10 miles) that allow it to detect distant galaxies forming at the edge of the observable universe, according to the ESO."