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The moon Iapetus, like the "force" in Star Wars, has both a light side and a dark side.

Astronaut Scott Kelly along with his brother, former Astronaut Mark Kelly speak to news media on Jan. 19, 2015 about…

NASA's Solar Dynamics Observatory captured an image of a M9.2-classl solar flare on March 7, 2015.

The moon Iapetus, like the "force" in Star Wars, has both a light side and a dark side.Scientists think that…

Does ALL solar activity impact Earth?

What is a coronal mass ejection or CME?

What is a solar prominence?

What is a solar flare?

What is solar activity?