... 3a. Angle . of sunlight . ... The Moon (1) . ... 4b. Moon Libration . ... The apparent path of the Sun across the sky. Note how much higher the Sun is in the sky in mid-summer! ... In addition, they are invariably tilted at an angle around 45 , to make sure that the arrival of the sun's rays is as close to perpendicular as possible. ... The rays of the summer sun, high in the sky, arrive at a steep angle and heat the land much more than those of the winter sun, which hit at a shallow angle. ...

... In the US and in other mid-latitude countries north of the equator (e.g those of Europe), the sun's daily trip (as it appears to us) is an arc across the southern sky. ... Moss avoids direct sunlight, and with the sun's path curving across the southern sky, the north side of a tree-trunk is the one most shaded. ... In addition, they are invariably tilted at an angle around 450, to make sure that the arrival of the sun's rays is as close to perpendicular as possible. ...

... The remote planet Pluto and its moon Charon orbit the Sun at a mean distance of almost 6,000 million kilometres, or nearly fourty times farther out than the Earth. During a recent investigation by an international group of astronomers [1], the best picture ever of Pluto and Charon [2] was secured with the European Space Agency's Faint Object Camera at the Hubble Space Telescope (HST). ... The new HST image was taken when Charon was near its maximum elongation from Pluto (0.9 arcseconds). ...

The ACS High-Latitude Survey Workshop . The Advanced Camera for Surveys (ACS) will be installed on HST later this year. In anticipation of that, STScI is in the early stages of defining the goals and and observing strategy for a major high-Galactic-latitude survey. ... Viewgraphs from the presentations will be linked in to the workshop program as they arrive from the speakers. ... Registration form . ... Program with links to viewgraphs updated March 28, 2001. ... Organizing Committee . ...

. Pulkovo Observatory of Russian Academy of Sciences is situated . near Saint-Petersburg. It was founded in 1839. 196140, Saint-Petersburg, Pulkovskoye chaussee 65/1 . English version . Russian version . This page has been accessed times since May 1, 1999.

... Since January 2000 our English translation (Astronomy Letters) is available on-line !!! . see Note on printing of the on-line papers) . Scanned copies of Astronomy Letters for 1975-2000 can be found on-line in free access in ADS . ... 1995 , 1996 - the Grand prize (full story) , 1997 (full story) , 1998 (full story) , . 1999 , 2001 (full story) , 2003 , 2004 (full story) , and 2005 . ... LANL / ITEPh astrophysics preprints . ... E-mail: pazh@hea.iki.rssi.ru . ...

... Дни открытых дверей к юбилею САО РАН (12-14 апреля 2016 г.) . Международная конференция "Dark Ages and White Nights (Spectroscopy of the CMB)" (20-24 июня 2016 г.) . ... Международная конференция MULTI-SPIN GALAXIES - 2016 (26-30 сентября 2016 г.) . Международная астрономическая конференция "Физика звезд: от коллапса до коллапса" (3-7 октября 2016 г.) Архив . ... Подробнее.. ... 10.02.16 . ... БТА в реальном времени . ... Цейсс-1000 в реальном времени . ... Последнее обновление: 22/03/2016 ...

... This precise description is called the standard model of electroweak physics. ... What brings about this important difference in the mass of these "field" particles? ... The Oregon group participates in the ATLAS experiment to investigate this question. ... Since Oregon joined ATLAS early in 2006, the group has devoted its effort to the process of selection of interesting events generated by the collisions of high energy particles within the ATLAS detector. ...

... What is an intelligence or an intelligent life? ... Various particular cases, new regimes, original approaches etc. being attractive as they could, all this is a pale shade of a real process of cognition. ... May an infinitely complicated object be indeed so simple? ... An intelligence could not arise in an infinitely complicated universe! ... There are two possibilities: whether our imagination of infinitely complicated object is incorrect or the surrounding world is not infinitely complicated. ...

... Single dish or.. ... SEST 15m M ax- Planck- Institut f Эr Radioastronomie European S outhern Observatory Onsala Space Observatory Atacama Pathfinder EXperiment Heterogeneous Arrays: CARMA = BIMA + OVRO + SZ Array (8 3.5m telescopes) SUP submitted Juniper 2002 road Flat 2003 move OVRO 2004 move BIMA 2005 full operations Chemistry and Massive Stars: - Embedded at main sequence - Large area heated, shocked - Extensive chemistry Orion as a Hot Core Test Case: Bright lines, complex spatial structure! ...

... The UK has a very vibrant solar system science community highly regarded internationally. ... The knowledge gained from such research has significant application to other STFC science areas, and indeed the science of other research councils. ... We therefore seek support to provide the 2012 Introductory Solar System Plasmas School, which will provide valuable training for the next generation of solar system scientists. ...

... Do you know why we have seasons on Earth? ... Even if you offer students the great activities developed by the Harvard researchers, or the great activities in ASP's teacher resource book, The Universe at Your Fingertips , your students still won't learn anything unless they work hard and think about their work. ... But none of these are worth a hoot unless they are also accompanied by hard work on students' part. ... The key to success in astronomy is the same as it is in everything else: hard work....

... Telescopes ћ Binoculars ћ Microscopes . Meade Ultra-High Transmission coatings (UHTC ) Group . ... Meade Standard Coatings: The optical surfaces of all Meade telescopes include high-grade optical coatings fully consistent in quality with the precision of the optical surfaces themselves. ... These specialized, and extremely advantageous, coatings are offered here as the Meade Ultra-High Transmission Coatings (UHTC) group, a coatings group available optionally on many Meade telescope models. ...

... Colorful Glimpses of Alien Worlds -- detecting exoplanets with precision radial velocity spectroscopy . Gabor Furesz . Thursday, Nov 10, 2011 at 8:00 PM . ... exoplanet candidates through the transit method. ... In my talk I will give a short summary about the current state of . ... about the design challenges an instrument builder faces when trying to . ... the near future, the era of the Giant Magellan Telescope for what the CfA . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

I'm glad you're interested in collaborating on the ConcepTests for Astronomy WWW database project! ... I'm looking forward to your contributions! ... a) high luminosity, high temperature to low luminosity, low temperature . b) high luminosity, low temperature to low luminosity, low temperature . c) high luminosity, low temperature to low luminosity, high temperature . d) high luminosity, high temperature to low luminosity high temperature. ... Back to Paul Green's Peer Instruction page. ...

... R astro-ph/0312163 5 for 170 sources (114 flat-spectrum and 56 steep-spectrum) and upper limits have been set for additional 27 sources (12 flat-spectrum and 15 steep-spectrum). The median polarization degree at 18.5 GHz for the flat-spectrum sub-sample is \Pi_{18.5}\simeq 2.7%, about a factor of 2 higher than at 1.4 GHz (\Pi_{1.4}\simeq 1.4%, based on NVSS data). For flat-spectrum sources we find a weak correlation between \Pi_{18.5} and the high frequency (5--18.5 GHz) spectral index. ...

... Geoffrey Bicknell . Following are my lecture notes more or less in the order that I give them, together with exercises and relevant papers and images. ... Lectures and tutorial Monday 09:30 Lecture - Duffield Lecture Theatre . Tuesday 11:00 Lecture - Duffield Lecture Theatre . Wednesday 09:30 Lecture - Duffield Lecture Theatre . ... Lecture notes: . Overview of High Energy Astrophysics . ... Questions 1-4; due 27 Feb . Questions 5-8; due 6 March . ... Figure 1 for above paper . ...

Medium Deep Survey Information The question of the legacy left by E-ALFA is one that we need to think very carefully about. ... We present here some possible parameters for such a survey. Survey Science Objectives and Benefits: · HI mass function over a range of environments: A deep survey will be much more effective at probing the HI mass function over a range of environments (if the regions surveyed are well chosen) because it will probe more independent volumes than a shallower survey. ...

... Where's the other star? ... Once a bright apparition in the southern hemisphere dawn Comet Lovejoy is fading, but its long tail still stretches across skies near the south celestial pole. ... Bright Star Regulus near the Leo I Dwarf Galaxy . ... The star near the top is so bright that it is sometimes hard to notice the galaxy toward the bottom. Pictured above, both the star, Regulus, and the galaxy, Leo I, can be found within one degree of each other toward the constellation of the Lion (Leo). ...