Tag: Xmm Observations

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February 9, 2012

AAVSO Alert Notice 452: Simultaneous Observations of SU Aur and AB Aur Requested for XMM-Newton

AAVSO Alert Notice 452 Simultaneous observations of SU Aur and AB Aur requested for XMM-Newton February 8, 2012 Dr. Hans Moritz Guenther, Harvard-Smithsonian Center for Astrophysics,…

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The Sun Now (Visible light)		The Sun Now (H-Alpha light)

Aurora Oval (Northern Hemisphere)		Aurora Oval (Southern Hemisphere)