This handout photo released by NASA shows the United Launch Alliance Delta IV Heavy rocket with the Parker Solar Probe on board launching from the Mobile Service Tower on August 12, 2018, Launch Complex 37 at Cape Canaveral Air Force Station in Florida.
NASA postponed until August 12, 2018, the launch of the first ever spacecraft to fly directly toward the Sun on a mission to plunge into our star’s sizzling atmosphere and unlock its mysteries. The reason for the delay was not immediately clear, but was called for after a gaseous helium alarm was sounded in the last moments before liftoff, officials said.