On Aug. 25, 1997, NASA launched the Advanced Composition Explorer, or ACE satellite to study energetic particles travelling through space. It lifted off from Kennedy Space Center in Florida on a Delta ...

The Advanced Composition Explorer (ACE) is Earth's vanguard. Orbiting around a point 900,000 miles away between Earth and our sun, this satellite is ever vigilant, recording the combination of ...

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 ...

Most of the cosmic rays that we detect at Earth originated relatively recently in nearby clusters of massive stars, according to new results from NASA's Advanced Composition Explorer (ACE) spacecraft.

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 ...