Thought-Provoking Imagery Shows Sun's Place in the Galaxy . ... SOHO - Explosive Coronal Mass Ejections from the Sun . SOHO-6 Comet at 2-6 solar radii from the Sun . ... The remarkable images come from SOHO's visible-light coronagraph, LASCO, which is able to mask the intense rays from the Sun's surface in order to reveal the much fainter glow of the solar atmosphere, or corona. ... SOHO is ideally placed to report and even anticipate their origins in the Sun's atmosphere. ... The Sun . ...

... HST . ... Data . ... HST Overview . Overview . ... Phase I Proposing . ... Retrieving HST Data . ... STIS . ... After extensive testing to optimize the CR rejection parameters (see the ISR 98-22, Cosmic Ray Rejection in STIS CCD Images) a new parameter table for CRREJTAB has been installed that implements the recommendations from Table 1 of ISR 98-22 . ... Tests with the new table show a marked improvement, and a much lower false rejection rate while still eliminating most cosmic rays in an image. ...

... 2000 December 2 . SN 1006: Pieces of the Cosmic Ray Puzzle . ... Explanation: Research balloon flights conducted in 1912 by Austrian physicist Victor Hess revealed that the Earth was constantly bombarded by high energy radiation from space - which came to be called "Cosmic Rays" . ... If (as expected) high energy protons are associated with these energetic electrons then supernova remnants like SN 1006 are sources of Hess' puzzling Cosmic Rays . ... About APOD | ...

We cannot observe the way the distant universe accelerates cosmic rays or produces energetic photons, but acceleration processes also occur on our Sun , though on a much more moderate scale. ... That is why such events are often missed by cosmic ray detectors near the equator, where the lowest energies are excluded by the Earth's magnetic field. The best detectors for observing solar particles are therefore those sensitive to the lowest energies of the cosmic radiation. ...

... The beautiful Trifid Nebula (aka M20), a photogenic study in cosmic contrasts, lies about 5,000 light-years away toward the nebula rich constellation Sagittarius. ... What size particles compose Saturn's rings? To help find out, the robot Cassini spacecraft now orbiting Saturn broadcast radio waves of three different wavelengths right through the rings to Earth earlier this month. ... Observations of rings bordering the Keeler gap in Saturn's rings showed unusual waves. ...

... Magnetic Storms . ... Cosmic Rays . ... Energetic Particles . ... Solar fast Particles . We cannot observe the way the distant universe accelerates cosmic rays or produces energetic photons, but acceleration processes also occur on our Sun , though on a much more moderate scale. ... That is why such events are often missed by cosmic ray detectors near the equator, where the lowest energies are excluded by the Earth's magnetic field. ... Should we be concerned about solar energetic radiation? ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Although the comet itself never comes dangerously close to the Earth, the particles of dust that it has shed during its many past passages through perihelion found their way into the Earth's atmosphere, appearing as meteors in the cold December sky. ... Animation 1 . ... An Ursid meteor captured by the Armagh Observatory's NE-facing meteor camera in the early morning of 23rd December. ... Meteor Showers Online . ...

... Julian Cribb, CSIRO National Awareness , ph 02 6276 6244 (bus), 02 6286 6022 (h), mobile 0418 639 245 . ... Dr. Lister Staveley-Smith , CSIRO Australia Telescope National Facility . phone: 02 9372 4271 (bh) or 02 9871 1307 (ah), www-homepage ) . ... Prof. Ron Ekers , Director, CSIRO Australia Telescope National Facility . ... and CSIRO Australia Telescope National Facility . ... phone: 02 6216 7220) . ... Helen Sim (hsim@atnf.csiro.au) --- Phone: +61 (0) 2 9372 4251, Fax: +61 (0)2 9372 4310 . ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... November 9, 10, 11, 12 and 13 . December 6, 7, 8 and 9 March 24, 25, 26, 27 and 28 . ... December 3, 4 and 5 February 13, 14 and 15 . ... December 10, 11, 12, 13 and 14 . Incoherent Scatter Radar ionospheric parameters measurements are carried out on coordinated days determined by the International Geophysical Calendar. ...

... Articles | ... Forums . ... 230 deg . 49 deg . ... 130 deg . ... More Info . ... 210 deg . ... 168 deg . ... 249 deg . ... 195 deg . ... 271 deg . ... 110 deg . ... 338 deg . ... July 15 . 247 deg . ... 224 deg . ... 340 deg . ... July Phoenicids (PHE) . ... August 10 . 341 deg . ... 339 deg . ... 307 deg . ... 334 deg . ... 335 deg . ... 286 deg . ... 327 deg . ... 262 deg . ... 102 deg . ... 153 deg . ... 117 deg . ... December 2 . ... 123 deg . ... 100 deg . ... www.astronomy.net . ...

... Astronomical Institute "Anton Pannekoek", Amsterdam of Univeristy, Amsterdam, Netherlands . ... Astronomical Institute, St.Petersburg University, St.Petersburg, Russia . ... Technical report on computer codes for Separation of variables and T-matrix methods (LaTeX file) . Technical report on WWW database of optical constants (LaTeX file) . Technical report on calculation of spheroidal wavefunctions and the eigenvalues (LaTeX file) . Annual report (1998) (LaTeX file) . ...

... Edward L. (Ned) Wright received his AB and PhD degrees from Harvard University, and was a Junior Fellow in the Society of Fellows. ... Prof. Wright is interested in infrared astronomy and cosmology. ... He has been working on the COsmic Background Explorer ( COBE ) since 1978. ... Wright, E. L. 2000, ApJ submitted, "DIRBE Minus 2MASS: Confirming the Cosmic Infrared Background at 2.2 Microns" . ... The COBE Diffuse Infrared Background Experiment Search for the Cosmic Infrared Background: II. ...