9/4/2026
The Chart Room

On this day in space! Aug. 25, 1997: NASA launches Advanced Composition Explorer to track solar wind and so much more

Filed by Dana Graviton
On this day in space! Aug. 25, 1997: NASA launches Advanced Composition Explorer to track solar wind and so much more
On Aug. 25, 1997, NASA launched the Advanced Composition Explorer, or ACE satellite to study energetic particles traveling through space, including solar wind and space weather. Here's why it mattered.
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Dana Graviton
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On this day in space! Aug. 25, 1997: NASA launches Advanced Composition Explorer to track solar wind and so much more — The Chart Room