... part 1 | ... Regular orbits of planets of the Solar system during their formation, . ... Radius of the orbit in perigelion . Regular orbit of a planet in time of its formation from . Divergence with actual radius . ... Name . ... orbit . ... Radius . ... Mercury . ... 1,3487 . ... 1,8191 . ... X-planet)* . ... Orbits of prospective planets destroyed in present . Orbits, on which planets of Mercury, Moon and (DePho) * presumably were before. | ...

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Mars . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Mars orbiter may be kaput . ... I n early November, the Mars Global Surveyor (MGS) fell silent. ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

Four NASA spacecraft and spacecraft from Japan and Europe are planned to be in operation at Mars in early 2004. In addition to the three tracking stations of NASA's Deep Space Network, located in Australia (which CSIRO oversees on behalf of NASA), Spain, and the USA, NASA has enlisted the 64-m Parkes dish of the ATNF to help track these spacecraft during the busy period, November 2003 to February 2004. NASA's Mars Global Surveyor and Mars Odyssey probes are already orbiting the planet. ...

... The seeing was good enough to be able to reduce both 850 and 450 micron data. aperture calculated from 850 micron data . ... Data, model and residuals for 450 micron data These maps were taken in March 2001. ... 1mm defocus data and model maps . 0.5mm defocus data and model maps . infocus data and model maps . ... The map of surface errors (shown as phase errors in radians) and the map of calcualated surface illumination is shown in the following plot: . ... 2mm defocus data and model maps . ...

. Space vehicle "Mariner-4". “Mariner” (English "Mariner" - a sailor) is an american autometic interplanet series for Venus, Mers, Mercury and Space investigations. They are designed for the planets flight and bringing in to the planetocentrial orbits. The maximum starting mass of "Mariner" is about 1 tone. In 1962 - 1973 10 "Mariners were launched. The surveys made by "Mariner-4" showed that Mars is also covered with the craters. The mass of the planet and its atmosphere was calculated. Back .

... ESO, the European Southern Observatory . ... VLT/Paranal . ... Survey Telescopes . ... The VLT Survey Telescope (VST) is the latest telescope to be added to ESOтАЩs Paranal Observatory in the Atacama Desert of northern Chile. ... It is the largest telescope in the world dedicated to sky surveys in visible light. The VST was designed and built by the INAFтАУOsservatorio Astronomico di Capodimonte, Naples, Italy as part of a joint venture between INAF and ESO. €а . ... VLT Survey Telescope . ...

Return to Flight Space Shuttle Discovery launched from NASA's Kennedy Space Center July 26, ending a two-and-a-half year wait for the historic Return to Flight mission. ... Astronaut Soichi Noguchi, representing Japan Aerospace Exploration Agency, and Steve Robinson, STS-114 mission specialist, did three successful spacewalks at the International Space Station and Discovery transported tons of equipment and supplies to and from the station. ... Discovery was about 600 feet from the station. ...

MAtrix Radiometric System project MARS. ... Three-module experimental radiometric matrix was designed and put in operation successfully. Flowchart of the one channel is shown in Figure 1. ... Figure 1. ... In figure 2 the receiver module and switch assembly is shown. ... The elementary radiometers are combined ( figure 3 ) into the microwave unit ( one pair of horns shown is out of use ), where they integrated to use unified systems for calibration, power supply and temperature control. ...

. Next: EPN_REDIST Up: EMOS_REDIST Previous: Generation from Ground Calibration Contents . Many calibration observations of celestial targets have been used to measure the response function of the MOS detectors as a function of observing date. The response has evolved, particularly at low-energies, and is currently modelled by an empirical formula designed to give consistent results between the EPIC-pn, EPIC-MOS and RGS cameras. Michael Smith 2011-09-20

... Bad Astronomy . ... Bitesize Astronomy . ... I learned something new this week and what better forum to share it with my Bad and Bitesized readers than right here? ... Launched on November 7, it actually left Earth before the Pathfinder lander, but was sent in a slower orbit. The MGS entered Mars orbit September 12, 1997, and began a long series of aerobraking maneuvers: it started in a highly elliptical orbit, and at the bottom end of each pass it actually dips a bit into Mars' atmosphere. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit†йs . ... des interviews, des portraits . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Tremblements de terre r†йcents sur Mars . ... Les chercheurs ont not†й une r†йpartition similaire des roches autour de l'†йpicentre du tremblement de terre de L'Aquila , survenu dans le centre de l'Italie en 2009. ...

NASA - Center for Mars Exploration Home Page or its' mirror site . NASA - Mars Atlas - Another good starting point for Links to Mars . ... NASA - Mars Page . ... JPL - Mars Explorati