Sungrazer Comets

@SungrazerComets

The Sungrazer citizen science project, sungrazing and near-Sun comets, #ISON, ESA/NASA SOHO and STEREO images, the Sun, and more! (Tweets by Karl Battams)

On Dec 12 of this year, @NASA STEREO-A will view Mercury transit the Sun! Cool!

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470 days ago

On Dec 12 of this year, STEREO-A will view Mercury transit the Sun! Cool!

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