Add Yahoo as a preferred source to see more of our stories on Google. On Aug. 25, 1997, NASA launched the Advanced Composition Explorer, or ACE satellite to study energetic particles travelling ...

A multinational team of researchers studying data from NASA’s Advanced Composition Explorer (ACE) satellite believe they have identified two major warnings signs that together trigger destructive ...

NASA's Advanced Composition Explorer (ACE) observes a wide array of particles that flow toward Earth from the sun to better understand the great space weather system that connects the sun to our ...

Every time a giant solar storm — like the one that blasted by Earth earlier this week — rushes past NASA's Advanced Composition Explorer satellite, scientists at NOAA's space weather forecasting ...