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Articles on Aurorae

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A huge solar flare flashes in the middle of the sun on Sept. 6, 2017. A separate image of the Earth provides scale. NASA/GSFC/SDO

Massive sunspots and huge solar flares mean unexpected space weather for Earth

At a time in the sun’s cycle when space weather experts expect less solar activity, our star is going bonkers with solar flares and coronal mass ejections. What effects will Earth feel?
Saturn and its rings backlit by the sun, which is blocked by the planet in this view. Encircling the planet and inner rings is the much more extended E-ring. NASA/JPL/Space Science Institute

Water, weather, new worlds: Cassini mission revealed Saturn’s secrets

With the probe now on its ‘Grand Finale,’ a Cassini team member describes the amazing discoveries it made about the ringed planet and its many moons.

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