Miranda ("mi RAN duh") is the eleventh of Uranus 's known satellites. ... Voyager 2 was forced to fly close to Uranus in order to get the boost it needed to go on to Neptune and due to the orientation of the whole system at almost right angles to the ecliptic only Miranda was approached closely. ... Voyager 2 passed so close to Miranda and the light levels are so low there (almost 3 billion km from the Sun) that special measures had to be employed to avoid smearing the images. ... Uranus .. ... Data . ...

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• APOD: 2008 August 17 - Io's Surface: Under Construction
• APOD: 2013 August 4 - Io's Surface: Under Construction
• APOD: March 21, 1997 - Io's Surface: Under Construction

... NGC 7789: Galactic Star Cluster . ... Activity on our parent star continues to increase as the sun approaches a maximum in its 11-year solar cycle, expected in the year 2000. ... M80: A Dense Globular Cluster . ... Four Faces of Mars . ... On July 4th, 1997 - using its own array of fireworks, a parachute, and airbags - the Mars Pathfinder spacecraft successfully came to rest on the surface of Mars at 10:07 AM Pacific Daylight Time. ... What's going on near the center of globular cluster NGC 6934? ...

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Журнал ПОВЕРХНОСТЬ публикует оригинальные статьи и обзоры по наиболее актуальным проблемам изучения поверхностных явлений. ... Редакция журнала 'Поверхность. ... Англоязычная версия журнала Journal of Surface Investigation . X-Ray, Synchrotron and Neutron Techniques выходит 6 раз в год . The Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques ( Poverkhnost '. ... X-ray, Synchrotron and Neutron Techniques is abstracted and/or indexed in (Impact Factor 0.359): . ...

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• LEK - Info

HUBBLE SPACE TELESCOPE DAILY REPORT #1092 PERIOD COVERED: 0700 EST Daily Status Report as of 069/1200Z. 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed WF/PC-2 5392 (Mapping Io's Surface and Volcanic Activity: Cycle 4 Medium) The WF/PC-2 was used to make images of the surface of Jupiter's moon Io to study changes since the Voyager Mission and before the Galileo Mission. ... Eight observations were completed as scheduled. ... Two images were executed in fine lock with no apparent problems. ...

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• http://www.stsci.edu/ftp/observing/status_reports/old_reports_96/hst_status_08_09_96
• http://www.stsci.edu/ftp/observing/status_reports/old_reports_94/hst_status_10_07_94
• http://www.stsci.edu/ftp/observing/status_reports/old_reports_95/hst_status_04_12_95

... Precisely one month ago, on 11 July 2009, the last active area of the new solar cycle disappeared from the surface of the Sun. Over the 30 days following this, neither observers on Earth nor devices in space have been able to detect the emergence of any sunspots. ... Therefore, it seems that our star has once again returned to a state of deep solar "winter", following several sparks of activity in May-June 2009. ... To date, this period has lasted 30 days. ...

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• Solar activity hits a new low
• Project's diary
• The CORONAS-PHOTON has registered the formation of the Sun's southern belt of

Ganymede is the largest moon in our solar system, larger even than the planets Pluto and Mercury. ... Ganymede's surface consists of two main types of terrain: old, dark polygonal units, and young, bright valleys and ridges (see figure 11 ). ... In a similar way, hitting a large block of ice with a hammer makes white marks. ... Ganymede as seen by Voyager 2. ... Because Voyager couldn't spot any large impact craters, scientists have concluded that the moon's surface is young. ... Moon . ... Europa . ...

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• ASP: Good Astronomy Activities on the WWW
• ASP: Cosmic Collisions
• ASP: The topsy-turveying of planets, stars, and lava lamps

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

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... The main periodicity in the Sun 's activity is the 11-year cycle called the solar cycle. ... During the cycle, changes occur in the Sun's internal magnetic field and in the surface disturbance level. ... At the beginning of a cycle the solar magnetic field resembles a dipole which axis is aligned with Sun's rotation axis. ... The sunspot number - and Sun's activity - is at maximum in the middle of a cycle, when the Sun's internal magnetic field is most chaotic. ... Space Physics Text Book of Oulu ...

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• Sun [Oulu]
• The Sun
• Global change [Oulu]

... News Research . ... Expert in the characterisation of magnetic activity and the coronae of slowly rotating (solar-type) and planet-hosting stars. ... Characterising the spectra of M dwarfs in the optical and NIR and studying the effects of strong magnetic fields. ... Experienced in modelling the coronae of planet-hosting cool stars and currently mapping magnetic fields in young pre-main sequence stars using HARPS spectropolarimetric data. ... Space Girls Space Women - Gaitee . Science Fuse . ...

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• Mario van den Ancker
• ESO - HIRES 2014: Astronomy at High Angular Resolution - A Cross-disciplinary
• Surface map of Luhman 16B recreated from VLT observations

RELATIVE SUNSPOT NUMBERS Description of Data from SGD Explanation of Data Reports: Relative Sunspot Numbers -- The relative sunspot number is an index of the activity of the entire visible disk of the Sun. ... The provisional daily Zurich relative sunspot numbers, Rz, were based upon observations made at Zurich and its two branch stations in Arosa and Locarno and communicated by M. Waldmeier of the Swiss Federal Observatory. ... This indicates the uncertainty above and below the predicted number. ...

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... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Distribution of the speed w of ejecta (bold curve) relative to a platform moving with a horizontal speed of 1650 m/s and at an altitude h=30 km above the lunar surface. The assumed distribution of the ejection speeds at the surface is a power law with a low cutoff value of 100 m/s and an exponent of 1.2. ... The same conclusion holds for the speed distribution of particles near the surface. ...

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• C.S. Jeffery, Research Astronomer
• J.G. Doyle, Research Astronomer
• C.J. Butler, Research Astronomer

... One of the widely used models of neural network is the multi-layered perceptron [6]. The model network has layers of input and output elements called neurons. ... An input vector is put on the input layer, passes through the hidden layers, and arrives at the output layer. The corresponding output vector is determined by calculation of the neuron activity level for each layer using already known values of neuron activity of the previous layers. ... Training was an iterative process. ...

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... July 8, 1999 . Eruptive Prominence . Credit: SOHO - EIT Consortium, ESA , NASA . Explanation: Activity on our parent star continues to increase as the sun approaches a maximum in its 11-year solar cycle , expected in the year 2000. ... Earth dwellers fortunate enough to be well located in Europe , the Middle East , Asia may be able to view for themselves activity above the solar limb during the upcoming August solar eclipse - the last total eclipse of the second millennium . ...

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• Uranus' Moon Miranda
• Uranus' Moon Oberon
• New Images Hint at Wet and Wild History For Europa

Definitions of Magnitudes and Surface Brightness 1 The magnitude system 1.1 Apparent magnitude Astronomers are stuck with the antiquated old system of magnitudes and so a clear explanation of what this system is and how it relates to more sensible units is important. ... 1.2 Absolute magnitude Absolute magnitude is a logarithmic luminosity scale. ... One usually goes by the round about process of referring to the absolute magnitude of the sun. ... Magnitudes and surface brightness 6/6 ...

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• Siding Spring Survey 2004 CB
• Surface intensity of a Solar simulation
• Surface Gravity

... Solar System . ... Comets and Asteroids . ... Vision of Vesta: a dark feature with a diameter of approximately 100 kim near the asteroid's equator can be seen in this image from Dawn (Image credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA) . Between Mars and Jupiter lies the Asteroid Belt. ... The Dawn space probe is expected to go into orbit around Vesta on 16 July, from there it will return some detailed images and other data, staying at the asteroid for about a year before setting off to visit Ceres. ...

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• A Rolling Stone on the Moon | Astronotes
• Most Earth-like exoplanet found by ESO | Astronotes
• How has Mars changed over billions of years? | Astronotes

... Certain classical problems of one-dimensional dynamics, of dynamics on surfaces, of billiards in polygons, of surface foliations, can be solved using the recent knowledge about the moduli spaces. ... The conference is intended to put into contact experts in different aspects of the area (dynamics in moduli spaces, surface dynamics, surface foliations, horocyclic flow, symbolic dynamics, billiards in polygons), which, hopefully, would enrich everybody. ... Download conference poster (PDF, 549k) . ...

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• Riemann surfaces and mathematical physics (Fall 2000)
• Arithmetic Geometry Year - Poncelet Laboratory
• Riemann Surfaces

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . ... Flights Chronology . ... Project History . ISS Russian Segment . Steps of ISS Assembly . ... Mounting of MPAC & SEED panels on the external surface of the Service module during extravehicular activity, obtaining video and photographic information on the state of the panels. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

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• S.P.Korolev RSC Energia - MARTIAN MISSION
• INTERNATIONAL SPACE STATION

... Moscow, Russia . ... March-October 2000 . ... Gusev A.S. Multicolor CCD Photometry of Six Lenticular and Spiral Galaxies. ... Gusev A.S., Park M.-G. Structure and stellar population of ringed barred galaxy NGC 2336 // Astronomy and Astrophysics, 2003, V.410, P.117-129. ... Gusev A.S. Photometric Properties of Bars in Galaxies // Astronomy Reports, 2000, V.44, N9, P.579-591. ... Gusev A.S. BVRI CCD Photometry of Pecular Galaxies NGC 5605 and NGC 5665 // Astronomy Reports, 2000, V.44, N9, P.569-578. ...

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• Maidanak Lab page

Comet Lovejoy skimmed across the Sun's edge about 87,000 miles (140,000 kilometers) above the surface late December 15, 2011, furiously vaporizing as it approached the stellar surface and later emerged from the other side. It is the brightest sungrazing comet that SOHO and SDO have ever seen, with a nucleus about twice as wide as a football field. On approach, the comet's tail waggled as it interacted with the magnetic field of the Sun's atmosphere. ... SDO ...

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• Voyager celebrates 25 years since Uranus visit | Astronomy.com
• Cassini rocks Rhea rendezvous | Astronomy.com
• Spacecraft reveals recent geological activity on the Moon | Astronomy.com

Next: Simple Universe Up: No Title Previous: Fermi's Paradox . ... In the middle of 70's Shklovskii formulated a concept of ``Space Miracle'' a resulting from the activity of Supercivilizations and proposed an idea of uniqueness of our civilization in the whole huge Universe . ... Is a hypothesis of uniqueness of Terrestrial Civilization so natural? ... Shklovskii himself, in his last paper rejected the idea of uniqueness and put forward even less consoling hypothesis of ``deadlock branch''. ...

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• http://xray.sai.msu.ru/~ivan/gmt/man/surface.html
• http://xray.sai.msu.ru/~polar/html/publications/poland2005/popov.ps
• My activity