A cluster of space weather satellites has blasted off to cast fresh eyes on solar storms. The three satellites belonging to NASA and the National Oceanic and Atmospheric Administration soared from Florida on Wednesday morning on the same SpaceX rocket. They’re aiming for a sun-orbiting lookout 1 million miles from Earth, each on its own separate mission. Altogether, the trio are worth about $1.6 billion. Besides offering advance notice of solar disturbances heading toward Earth, the spacecraft will also serve as early warning beacons for the astronauts who will fly to the moon, beginning next year.