Nickolai Copernic: "making the Sun stop, pushing the Earth". ... The aim of Copernic's investigations is improving the calculating schemes. ... In heliocentric system appeared an opportunity of calculating real proportions of Solar system using the radius of the Earth's orbits as an astronomical unit. Copernic's book "About Rotation of Celestial Bodies" contains a discription of astronomical devices as well as a new more exact catalogue of stable stars. ...

... Star Atlas . ... stars . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... Proxima Centauri is a red dwarf star, so would it appear red from the surface of an Earth-like planet in that star's habitable zone? ... Astronomers haven t found planets around our Sun s nearest neighbor, the red dwarf Proxima Centauri. ... Most exoplanets orbit red dwarfs the most common and longest-lived type of star. ... Get instant access to subscriber content on Astronomy.com! ...

Last modified: 13 September 1999 . ... V codes are for AO1 experiments W codes are for AO2 experiments VS experiment codes are VSOP Survey Observations VT Test/Calibration Observations ------------------------------------------------------------------------ EXPNO SOURCE FRQ Corr DOY DY: DATE UT RANGE #TEL TELESCOPES VS06a J0525-45 C Pent 244 We:Sep-01 23:00 - 03:00 3 HH MP HO W081e2 J1635+38 C* Socr 245 Th:Sep-02 18:00 - 05:20 11 VLBA EB V093a W055h J1640+39 C ...

... of the RadioAstron Meeting . ... Chairman Kulikov S.D. · Welcome . S.D. Kulikov (10 min) . Discussion of the Agenda (10 min) . Development and tests of the spacecraft “SPEKTR-R” and general time-line of the mission . ... Time-line of development of science payload . ... E. Fomalont (NRAO), P. Diamond (EVN), D. Jauncey (Australia), . ... E. Fomalont, W. Cannon, L. Girvits, S.F. Likhachev (30 min) . ... Technical and operation experience, and science results from VSOP mission . ...

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... September 02, 2009 - Solar activity hits a new low . The Sun has come all of one day away from breaking its record for the longest period of inactivity for the last decade - reaching a mid-summer low and falling into yet another state of 'hibernation'. ... Astrophysicists had to wait almost two months for this event: the group of sunspots occupying the last line of the catalogue (number 1024), vanished from the solar disk on 11 July this year. ... Solar activity hits a new low . ...

Solar Large-Scale Chains: Some Events . ... The chains appear to light up separators or quasi-separatrix layers between different interacting large-scale magnetic flux systems in the global solar magnetosphere and, in particular, to outline large-scale coronal structures involved in the CME process. ... Some features of the chains and their relations to CMEs are illustrated for a number of halo CME-associated events. 23 events of 1997-2000 . ... Halo-CME-associated events of November 1997 . ...

... Jay Apt (Ph.D.) . NASA Astronaut (Former) . ... PUBLICATIONS: Dr. Apt shared his images and knowledge in the publication Earth in Orbit : NASA Astronauts Photograph the Earth , written in conjunction with NASA scientists Michael Helfert and Justin Wilkinson and published by the National Geographic Society. ... From 1976 to 1980 he was a staff member of the Center for Earth & Planetary Physics, Harvard University, supporting NASA s Pioneer Venus Mission by making temperature maps of Venus from Mt. ...

... This lesson traces the beginning of the heliocentric theory of the solar system--the idea that the solar system revolves around the Sun--to an observation by the Greek astronomer Aristarchus, which convinced him that the Sun was much bigger than the Earth. ... This lesson plan supplements: "Aristarchus: Is the Earth revolving around the Sun?," section #9a : on disk Sarist.htm , on the web . ... What does the Sun-Earth-Moon angle (corner at Earth) at such times tell about the Sun's distance? ...

... Moon Phase below . ... ARTICLE: Why the moon always shows us the same face . ... Before you continue reading, you should know that this was not always the case, i.e. the Moon once was rotating with respect to the Earth, so that on every night a terrestrial observer (if there was one, because this was long, long before mankind appeared on our planet, and even before any major animals had appeared) saw another face of the Moon. ... Figure 1 (not to scale) shows how we can imagine the system Earth-Moon...

Physicists have been honored by having their picture on currency in many countries around the world. ... Marie and Pierre Curie (Marie: 1867-1934, Pierre: 1859-1906) appear on the French 500 franc note. ... The greatest physicist of this century, Einstein not only invented the theories of special relativity (behavior of rapidly moving object) and general relativity (theory of gravitation), but made fundamental contributions to the beginnings of quantum theory. ... For a bio, click here . ... 100 K) . ...

The integers $ a_n=\sum_{k=0}^n{\binom nk}^2{\binom{n+k}k}^2, n=0,1,2,... $ appear as denominators of rational approximations to $\zeta(3)=\sum_{k=1}^\infty k^{-3}$ in Apery's proof of the irrationality of $\zeta(3)$. The sequence satisfies a polynomial recursion, namely, $ (n+1)^3a_{n+1}-(2n+1)(17n^2+17n+5)a_n+n^3a_{n-1}=0$, where $n=0,1,2,...$, and admits several curious congruence properties. ... Site design by Paul Zinn-Justin (2005) ...

Proceedings of the XXVIIth Young European Radio Astronomers Conference (YERAC). Go to: Participants , Group Photograph , Preface , Acknowledgements , Contributions . ... Mullard Radio Astronomy Observatory , Cavendish Laboratory , University of Cambridge , UNITED KINGDOM . ... Group Photograph . ... Acknowledgements . Contributions . ...

Seven months ago, on Mar 19, 2008, at 09:12 Moscow time, a new star appeared on the sky. The Sun had already risen over the Russia, but people of the Western hemisphere might be able to see by their eyes a faint starlet near one of Bootes constellation stars. This starlet appeared and faded by an order of magnitude in a minute. Astronomers named it GRB080319B or, informally, the Naked-Eye Burst, as it was twice as bright as human eye can see a star. ... Royal Astronomical Society . ...

ChangeLog for lccorr =============================== Open SPRs: ---------- 3111 Version 2.2.8 - 2004-03-17 (IMS/LUX) ------------------------- - Fixed SPR 3280. ... Version 2.2.6 - 2004-03-15 (IMS/LUX) ------------------------- - Fixed SPR 3272. ... Version 1.5 - 14 Sep 2001 (IMS/LUX) ------------------------- - Fixed another depend error. Version 1.4.5 - 17 May 2001 (IMS/LUX) ------------------------- - Fixed depend error. ... SPR deprecating use of caps in taskname macro fixed. ...

... 13th European VLBI Network Symposium . and Users Meeting . on September 20-23, 2016. ... 13th European VLBI Network Symposium and Users Meeting on September 20-23, 2016. ... Year book "Ephemerides of Minor Planets for 2016" on-line . ...

... Here some data observed on the 6m telescope with IFP installed in the OLD focal reducer are presented. ... Mkn 3: velocity field . ... NGC 5252: [OIII] image . ... NGC 5252 was observed 23 Feb. 1998 in the [OIII]5007 emission line with CCD TK1024 as detector. ... We observed the ionized gas velocity fields of the spiral galaxies with two purpose. ... Restored velocity field of NGC 157 in the reference frame rotating with the pattern speed overlaid on the Ha image of the galaxy . ... NGC 4100 . ...