Электронная библиотека астронома-любителя. ... библиотека . архив RSN . ... Ru.Space.News: . Июль 1998 . ... Дата: 21 июля 1998 (1998-07-21) От: Alexander Bondugin Тема: Today On Galileo - July 19, 1998 Привет всем! ... TODAY ON GALILEO July 19, 1998 The fifth encounter of the Galileo Europa Mission starts late today, seven months after the start of the spacecraft's mission extension. ... The first in the series was the last encounter of Galileo's primary mission. ...

... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...

Blackholes2 Forum Message . Forums: . ... Discussion Forums | ... Cool Ideas Krill . Forum List | ... Post Message | ... But we see it with a narrower diameter, due to bending of light at great distances by mass (like Einstein's idea of large mass bends light). ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

University Satellites and . Space Science Education . ... Two micro-spacecraft constellation with solar sails partially compensating the solar gravity allow their placement in the points along the Sun-Earth line behind the standard L1 point, i.e. further out from the Earth and closer to the Sun. The distances of the placement from the Earth and the base distances between such satellites depend on the ratios of their mass to the sail area. ...

NEWS FEDERATION rus ENCYCLOPEDIA rus HISTORY rus MIR STATION RUSSIAN . ... Cosmonauts. ... Space Science . Heroes Of Space Remember . Military Space . History . ... Venus Express Will Happen - Under Russian Direction . ESA approved the project proposed by Dmitri Titov, an IKI scientist now working at Garching, Germany. ... NASA and ESA are building two new deep space antennas to support the 2003-2004 Mars exploration boom. ...

Optical observations of comet P/Tempel 1 Heike Rauer, JЖrg Knollenberg, Michael Weiler DLR, Institut fЭr Planetenforschung Berlin-Adlershof Observations of comet P/Tempel 1 at optical wavelengths Before and after impact : monitoring · Gas production rates -,,classical optical long- slit spectroscopy: CN, C3, C2, NH2 - variation along heliocentric distance : difference before ­ after? - compare with measurements of parent species at radio, IR · ...

... PUBLIC LECTURE - APRIL 12, 2016 . New Discoveries in the Outer Solar System: Ceres, Pluto and Planet X . ... Dr. Green will talk about "New Discoveries in the Outer Solar System: Ceres, Pluto, and Planet X". ... Beginning in 1992 planetary astronomers began to find Pluto like objects beyond the orbit of Neptune showing us that Pluto was a member of an entirely new family of objects we now call the Kuiper Belt. ... Amateur Astronomers Association of Princeton, Inc., ...

... MAO main . ... Announcement : Conference on AUTONOMOUS SPACECRAFT NAVIGATION - New Concepts, Technologies & Applications for the 21st Century . ... От: Heraeus announcements . ... Тема: Announcement : Conference on AUTONOMOUS SPACECRAFT NAVIGATION - New Concepts, Technologies Applications for the 21st Century . This announcement was send to several email lists. ... AUTONOMOUS SPACECRAFT NAVIGATION . New Concepts, Technologies Applications for the 21st Century . ...

... Astronomy news . ... Earth Seen By NASA's Moon Mapper On India's Chandrayaan-1 Spacecraft . A new image of Earth taken from 200 kilometers (124 miles) above the lunar surface was taken by the Moon Mineralogy Mapper, one of two NASA instruments onboard the Indian Space Research Organization's Chandrayaan-1 spacecraft. ... NASA's Jet Propulsion Laboratory, Pasadena, Calif., designed and built the Moon Mineralogy Mapper and is home to its project manager, Mary White. ...

... Bad Astronomy . Misconceptions . ... Bad Astronomy : The Moon only shows one face to us because it is not rotating. Better astronomy : The Moon only shows one face because it is rotating, once every time it revolves around the Earth. ... Place the Moon model on the table about 30 centimeters (one foot) away with the X facing the Earth model. ... You'll see that to keep the X facing the Earth model, you have to rotate the Moon model as it goes around the Earth model . ... 2008 Phil Plait. ...

... The sample of the Local Volume galaxies (distance smaller than 10 Mpc) gives a unique opportunity to study the properties of galaxies including the weakest objects: the absolute magnitude M B -10 and the virial mass M vir 10 9 M x263C;. ... Luminosity function of the Local Volume galaxies. ... The luminosity functions for galaxies are presented: red dashed line - from the 2dFGRS survey (Norberg et al. 2002); blue dash-dotted line - from the SDSS survey (Blanton et al. ...