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 ...

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 ...

According to sensors on NASA's Advanced Composition Explorer spacecraft, galactic cosmic rays have just hit a Space Age high. Skip to main content. Your source for the latest research news.

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 ...

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 spacecraft.

McComas is also the PI of many major NASA instruments, including the plasma instrument in Ulysses (SWOOPS) and the proton-electron instrument in the Advanced Composition Explorer (ACE – SWEPAM). These ...