... Particle Sizes in Saturn's Rings . ... Explanation: What size particles compose Saturn's rings? ... The experiment was sensitive to ring particle sizes because ring particles much larger than a broadcast radio wavelength will reflect those radio waves away. ... The white center of Saturn's B-ring indicates that the density of ring particles was too high to make a good determination. Other radio observations indicate that some ring particles can be as large as several meters across. ...

Еще в разделе: (Показать все результаты (>8456) - www.sai.msu.su/ )

• APOD: 2005 December 5 - Ice Fountains Discovered on Saturns Enceladus
• APOD: 2009 April 15 - Jagged Shadows May Indicate Saturn Ring Particles
• APOD: 2004 March 1 - Cassini Closes in on Saturn

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. July 16, 1999 . Solar Surfin' . Image Credit: High Altitude Observatory , NCAR . Explanation: The sun's corona is a tenuous outer atmosphere composed of streams of energetic charged particles, but it is only easily seen from Earth during a total solar eclipse . ... About APOD > . ...

Еще в разделе: (Показать все результаты (>7340) - www.arcetri.astro.it/ )

• APOD: April 9, 1999 - WR 104: Pinwheel Star
• APOD: 2000 July 20 - AR9077: Solar Magnetic Arcade
• APOD: May 5, 1998 - Aurora at Midnight

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

Еще в разделе: (Показать все результаты (>3) - www.astronomer.ru/ )

... Bad Astronomy . ... Mad Science . ... Site Info . ... Public Talks . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Who is this guy who calls himself "The Bad Astronomer?" ... First, yes, I am a real live astronomer (when people ask me what astronomers do, I tell them "They astronom !" ... These are emitted by powerful objects like black holes, exploding stars, and super-dense neutrons stars. ... Finally, am I really a bad astronomer? ... 2008 Phil Plait. ...

Еще в разделе: (Показать все результаты (>364) - www.badastronomy.com/ )

• Phil Plait's Bad Astronomy: Bitesize Astronomy

... Particle Sizes in Saturns Rings . ... Credit Copyright: RSS , JPL , ESA , NASA Explanation: 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. The experiment was sensitive to ring particle sizes because ring particles much larger than a broadcast radio wavelength will reflect those radio waves away. ... NASA Official: Jay Norris. ...

Еще в разделе: (Показать все результаты (>156164) - www.astronet.ru/ )

• Астронет > Particle Sizes in Saturns Rings
• Ice Fountains Discovered on Saturns Enceladus
• Астронет > Ice Fountains Discovered on Saturns Enceladus

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

Еще в разделе: (Показать все результаты (>623) - www.aaa.org/ )

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Moon . Planets . ... Space Flight . ... A gorgeous image of the real ?Lord of the Rings? ... Saturn is a big planet, about nine times as wide as the Earth, so the rings are huge. Let me put them into scale, if Saturn and the rings were moved so that one edge of the rings touched the Earth, then the distance across the rings to the opposite edge would extend more than halfway to the Moon. ... Saturn has a lot of moons. ...

Еще в разделе: (Показать все результаты (>2799) - www.armaghplanet.com/ )

• Are you an astronomer: Seven telltale signs! | Astronotes
• Neptune: discovered one year ago | Astronotes
• The Blue Planet | Astronotes

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Asteroid 2010 SO16 and the Earth follow similar orbits around . the Sun. ... out a horseshoe shape in space, taking 175 years to go from . ... Asteroid 2010 SO16 takes 175 years to make the trip from one end of the horseshoe to the other. ... Currently, three other horseshoe companions of the Earth are known to exist but, unlike 2010 SO16, these linger for a few thousand years at most before moving on to different orbits. ...

Еще в разделе: (Показать все результаты (>2384) - star.arm.ac.uk/ )

• Amateur Astronomer Becomes Second Ever to Discover Asteroid from Ireland, After
• Spinning Star Formation
• Japanese Discover Large Earth Crossing Asteroid

A team of U.S. and German astrophysicists have made the first ever detection of X-rays coming from a comet. ... Following the initial detection, the team reported repeated X-ray emissions from the comet over the next 24 hours. ... One preliminary theory is that X-ray emission from the Sun was absorbed by a cloud of gaseous water molecules surrounding the nucleus of the comet, and then were re-emitted by the molecules in a process physicists call "fluorescence." ... Comets . ...

Еще в разделе: (Показать все результаты (>671) - www.iki.rssi.ru/ )

• Principles of the Magnetic Trapping of Particles
• The Motion of Magnetically Trapped Particles -- History
• Positive Ions -- History

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

Еще в разделе: (Показать все результаты (>329) - zebu.uoregon.edu/ )

• Astronomy Plus CCD Images of Galaxies

Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

Еще в разделе: (Показать все результаты (>746) - www.rochesterastronomy.org/ )

... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Saturn . ... Astronomers using Keck Observatory discover rain falling from Saturnт??s rings . ... RELATED TOPICS: SATURN | ... NASA-funded observations on the W. M. Keck Observatory with analysis led by the University of Leicester, England, tracked the т??rainт?? of charged water particles into the atmosphere of Saturn and found the extent of the ring-rain is far greater, and falls across larger areas of the planet, than previously thought. ...

Еще в разделе: (Показать все результаты (>6549) - www.astronomy.com/ )

• Magnetic fields, subatomic particles, etc., traveling in different directions
• What can astronomers tell us about the different colors on the surface of
• Astronomers recently discovered that Scholz's star passed close to the Sun

NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... Visitor Center . ... Astronomers using the worldтАЩs largest radio telescope, at Arecibo, Puerto Rico, have discovered flaring radio emission from an ultra-cool star, not much warmer than the planet Jupiter, shattering the previous record for the lowest stellar temperature at which radio waves were detected. ...

Еще в разделе: (Показать все результаты (>2946) - www.naic.edu/ )

• astronomers detect coolest star
• Arecibo Radar Discovers Triple Near-Earth Asteroid
• Astronomy at AO

... What is there beyond the edge of the universe? ... This is often illustrated by newspaper headlines: "Scientist sees face of God, confirms Big Bang model" (a reference to results from the Cosmic Background Explorer satellite), "Is the cosmos younger than some of the stars it contains? ... The Lone Universe . ... We cannot reproduce it; we cannot take another one and see what happens to it; we cannot compare it to anything else, as astronomers routinely do with planets, stars, and galaxies. ...

Еще в разделе: (Показать все результаты (>1305) - www.astrosociety.org/ )

• ASP: Using Multicultural Dimensions to Teach Astronomy
• ASP: Miranda: A Jigsaw Puzzle World
• ASP: Steering by Different Stars? Astronomers and the Dark-Sky Movement

... Timeline . ... Belts . ... Energy . The Earth actually has two radiation belts of different origins. ... The name "radiation belt" is usually applied to the more energetic part of that plasma population, e.g. ions of about 1 Mev of energy (see energy units ). The more numerous lower-energy particles are known as the "ring current", since they carry the current responsible for magnetic storms . ... The Ozone Hole and the Magnetic Field (1) . ... Radiation Belts and Manned Space Flight . ...

Еще в разделе: (Показать все результаты (>811) - www.cosmos.ru/ )

• The Exploration of the Earth's Magnetosphere"
• The Motion of Magnetically Trapped Particles -- History
• Positive Ions -- History

This is the homepage of Andrew Fruchter, an astronomer on the staff of the Space Telescope Science Institute . ... Here you can look at an HST images of the optical counterparts of gamma-ray bursts and their host galaxies. ... Therefore, substantial information on the fine scale structure of objects can be obtained by offsetting the pointing of the telescope between exposures and then combining these "dithered" exposures into a single image. ...

Еще в разделе: (Показать все результаты (>11369) - www.stsci.edu/ )

• Local astronomers find gigantic halo around neighboring galaxy - By MEGHA
• RPS2 Demonstration
• John H. Debes

... The first task assumes the searching for chemical composition and sizes of particles which give the wavelength dependence of the extinction efficiencies close to the observed dependence of . Figure 7: Wavelength dependence of the extinction efficiency factors for homogeneous spherical particles of different sizes consisting of astronomical silicate and amorphous carbon. The dashed segment shows the approximate wavelength dependence of the mean galactic extinction curve at optical wavelengths. ...

Еще в разделе: (Показать все результаты (>319) - www.astro.spbu.ru/ )

• Database of Optical Properties -- Level: subsubpage
• Database of Optical Properties -- Level: welcome
• Extinction properties (transmitted radiation)

The small solids. Asteroids or the small planetes . ... The comets. ... Ceneca the Young.Procuring about the nature.63 y. The comet is a celestial body of a great size, but a rare one... transparent. Sometimes there seen a core and the medium forms a kind of a tail, beard or dishevelled looks. ... The core is an ice body - conglomeration of frosted gas and dust. ... The comet state is variable: ones have the con tails, others the dust tails, and the third have both. ... Meteors and meteorites. ...

Еще в разделе: (Показать все результаты (>72) - www.space.vsi.ru/ )

• Keplere
• irasphotoe
• antichnoste

... Astrophysics Group . ... Pulsars . ... Stars ? ... The array was designed to detect compact radio sources such as these by virtue of the fact that they would scintillate (twinkle) when observed from the Earth through the interplanetary medium ? ... One of Antony Hewish?s research students, Jocelyn Bell, was set the task of operating the telescope and inspecting the daily charts for the kind deflections in the trace which occurred when a scintillating source passed over the array. ...

Еще в разделе: (Показать все результаты (>2622) - www.mrao.cam.ac.uk/ )

• XXVIIth YERAC Preface

... 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 . ...

Еще в разделе: (Показать все результаты (>3453) - hea-www.harvard.edu/ )

• The AstroStat Slog Blog Archive Feynman and Statistics
• The AstroStat Slog Blog Archive [MADS] Chernoff face
• The AstroStat Slog Frequentist