Add Yahoo as a preferred source to see more of our stories on Google. On Dec. 28, 2000, NASA’s Galileo spacecraft discovered auroras on Ganymede, Jupiter’s largest moon. Galileo launched in 1989 on a ...
Advanced analysis of decades-old data from NASA's Galileo spacecraft identifies ammonia-bearing compounds discovered on the surface of Jupiter's moon Europa, as shown in this composite image. Zooming ...
When NASA launched the Pioneer probes, they were met with an intriguing mystery. At around 20 astronomical units, both ...
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