Jan Hendrik Oort, 28 avril 1900 - 05 novembre 1992.
Jan Hendrik Oort. Zum ersten Todestag des großen niederländischen Astronomen.
Jan Hers (1915-2010)
Jan Smoliński, 11 August 1934 - 8 Juli 1995.
Jan van der Bilt (obituary)
Janet Akyüz Mattei
Janet Akyüz Mattei (1943-2004)
Janez Jakob Olben - Almost Forgotten Slovenian Astronomer. (Slovenian Title: Janez Jakob Olben - skoraj pozabljeni slovenski astronom)
Jansky and Reber: Two Remarkable Stories in Early Radio Astronomy
Jansky, Karl Guthe (1905-50)
Janssen et l'Observatoire astronomique du mont Blanc.
Janssen et le démon de la précision.
Janssen, Pierre Jules César (1824-1907)
January 2010 Perspectives on IYA2009 in Canada
January 5-12, 1997 Heliospheric Substorm: Morphology and Interpretation
January Nights
January Sun. (Slovenian Title: Januarsko Sonce)
JANUS And Xenia: Exploring The High Redshift Universe
JANUS, A Proposed Pathfinder Mission to Mercury
JANUS-XRFM: Instrument Design and Science Capabilities