... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Mars . ... Sky this Month . ... Sky this Week . ... Astronomy for Kids . ... Melas Dorsa reveals a complex geological history on Mars . ... Melas Dorsa in full color. ... On April 17, the orbiter pointed its high-resolution stereo camera at the Melas Dorsa region of Mars. ... Melas Dorsa impact crater perspective view. ... Melas Dorsa topography. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

The Astronomical Society of the Pacific gratefully acknowledges the partnership of the Geological Society of America in sponsoring this national meeting including the "Cosmos in the Classroom" Symposium and the "Earth & Space Science: Making Connections in Education and Public Outreach" symposium. ... NASA Lunar Science Institute . Infrared Processing and Analysis Center . NASA Herschel Science Center . ... The Center for Astronomy Education at the University of Arizona . ... Big Kid Science . ...

... tr,a ME ae, Se at aunsy B iyD tw r l a d Srn e n M t g. o Recent transits of Mercury (15 November 19 9 9 ) and V enus (8 J une 2004 ) have led to new interest in the origin and ex planation of the famous black drop phenomenon (e.g. Schaefer 2001, Schneider, P asachoff and Golub 2004 , Sheehan and W estfall 2004 , and references therein) ... O bservations of the phenomenon (e.g. Green and C ook 17 7 1; see fig- black drop ex tension in both cases (figures 2 and 3). ... Furthermore,...

... Archives . ... If you do not mind the time predictor, it is hard to believe that this is a light curve, time dependent data. ... It?s hard to say this data set is designed for time series analysis apart from the complication in statistical inference due to measurement errors. How to design the statistical study with measurement errors, huge gaps in time, and unequal time intervals is complex and unexplored. ... The following is R output without measurement errors. ... Chandra Blog . ...

... Space Telescope Science Institute and Johns Hopkins University . A multidisciplinary course exploring the origins of life, planetary formation, Earth's evolution, extrasolar planets, habitable zones, life in extreme environments, the search for life in the Universe, and space missions. DiRuggiero, Norman, and others, 3 credit hours. ... The JHU Department of Earth and Planetary Sciences also offers courses that may be of interest to students interested in astrobiology: . ...

... xmmtrack . ... xmmtrack is an interactive IDL application that visualizes the orbit and attitude data in an ODF in the form of a 3-D animation sequence. The presented scenery includes an astronomically accurate simulation of the Earth-Sun system plus the actual and predicted trajectory of the XMM satellite on its path around the Earth. ... Please note: XMM's orbit is highly time variable and the predicted orbit will significantly deviate from the actual trajectory if the reference epochs differ. ...