Space Weather Aug 18, 2009
Spotless Days
Current Stretch: 38 days
2009 total: 180 days (79%)
Since 2004: 691 days
The sun is blank--no sunspots.
Solar wind
speed: 340.9 km/sec
density: 6.8 protons/cm3
Exosphere Confirmed at Saturn's Moon Dione
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The Cassini spacecraft flew by Dione, one of Saturn's icy moons, on 7 April
2010. During that flyby, instruments detected molecular oxygen ions around
the ...
23 minutes ago
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