... Comet Animation . ... Comet structures are diverse and very dynamic, but they all develop a surrounding cloud of diffuse material, called a coma, that usually grows in size and brightness as the comet approaches the Sun. ... As comets approach the Sun they develop enormous tails of luminous material that extend for millions of kilometers from the head, away from the Sun. ... The evaporated molecules boil off and carry small solid particles with them, forming the comet's coma of gas and dust. ...

... Solar Data: f.e. X-ray . Night Sky Live . ... Heavens-Above: Sky chart, Satellites, Iridiums and astronomical objects For Moscow For SAO Baksan . ... ESO-MIDAS page . ... Tutorials for Astronomy . ... Asteroid and Comet Hazard . ... Observable Comets: This page lists links to orbital elements and ephemerides of (potentially) observable comets. ... Leonid page - a lot of information for years Comets and Meteor Showers . The American Meteor Society . ... North American Meteor Network Home Page . ...

MULTISCOPES . ... Modular Microscopes satisfy all your educational, medical diagnostic, and research requirements. ... To better match the diversity of your applications, the MULTISCOPE Series comes in more than ten standard models, capable of performing the most critical tasks of Brightfield, Phase Contrast, and Polarized Light microscopy. ... Modular Microscopes provide you with a choice of three easily interchangeable high-performance observation heads, all 360° rotatable for comfortable viewing. ...

... 2001 - present-day Researcher in Theoretical Department of Astro Space Center of Lebedev Physical Institute ot RAS . ... Department Number . ... Astro Space Center . ... arna@lukash.asc.rssi.ru . ... Arkhipova N.A., Komberg B.V., Lukash V.N., Mikheeva E.V., "Population of Cosmic Voids", Astronomy Reports 51, pp 787-796 (2007) . ... Surdin, V.G., Arkhipova, N.A., "Influence of dissipation and dynamical friction on the number of globular clusters in a galaxy", Astronomy Letters, Vol.24, p.343 (1998) ...

October 30-31, 1992 . ... Modified images of the October 30-31, 1992 event. (a) - This NRH image is adapted to show a very bright loop-like source over AR 7321 near the SW-limb identified with the X1.7 soft X-ray LDE event peaked on 30d at 17:30 UT (see the GOES-7 soft X-ray plot also at the upper right corner). ... Here and hereafter, the white features are radio filaments. (c) - This modified NRH image shows some large scale microwave blob chains and structures. ...

... A.Tsivilev (Pushchino Radio Astronomy Observatory) "Investigation of Orion A nebula by radio recombination lines". ... T.D.Dorokhova (Astronomical observatory of Odessa national university) «Researches of rapidly oscillating Ap stars». ... N.V.Grabko (Odessa State Ecological University), M.I.Ryabov (Odessa Observatory of IRA NANU) "Space Weather and us: influence of change of a condition of solar and geophysical activity on reaction of various systems of an organism of the person". ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...