First detection of the 63 μm atomic oxygen line in the thermosphere of Mars with GREAT/SOFIA L. Rezac, P. Hartogh, R. Güsten, H. Wiesemeyer, H.-W. Hübers, C. Jarchow, H. Richter, B. Klein and N. Honingh A&A, 580 (2015) L10 Published online: 13 August 2015 DOI: 10.1051/0004-6361/201526377