As announced by the IAU Central Bureau for Astronomical Telegrams in Circular No. 9004 on 11 December 2008, Bulletin C36 of the International Earth Rotation and Reference Systems Service announced that a positive leap second will be added on 1 January 2009. ... Bulletin C is mailed every six months, either to announce a time step in UTC or to confirm that there will be no time step at the next possible date. Daniel GAMBIS Head Earth Orientation Center of IERS Observatoire de Paris, France ...

... The flag on the moon represents an important event in vexillological history. ... During their historic extravehicular activity (EVA), the Apollo 11 crew planted the flag of the United States on the lunar surface. ... Like any activity in space exploration, the Apollo flag-raising also provided NASA engineers with an interesting technical challenge. ... As NASA plans a return to the moon and an expedition to Mars, we will likely see flags continue to go "where no flag has gone before." ...

The AstroGuide . ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . Information on space and astronomy for kids, parents and teachers. Features columns, net links, interactive chat and bulletin board. Last Update October 26, 2004 . Listed Since October 26, 2004 . ... Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

. Inside the clubhouse you can find our bulletin board. It has been rearranged since this picture, but there is still loads of information on it and a joke or two.

... Thesis Title: "The Kiloparsec-Scale Structure and Kinematics of High-Redshift Star-Forming Galaxies" . ... Thesis Title: "Modeling the Tidal Tails of the Sagittarius Dwarf Galaxy" . ... Yan, R., Tremonti, C., Bershady, M.A., Law, D.R. , et al. ... Law, D.R. , Shapley, A.E., Checlair, J., Steidel, C.C. 2015, ApJ, 808, 160 . ... Law, D.R. , et al. ... Law, D.R. , Steidel, C.C., Shapley, A.E., Nagy, S.R., Reddy, N.A., Erb, D.K. 2012, ApJ, 759, 29 . ... Law, D.R. and Majewski, S.R. 2010b, ApJ, 718, 1128...

... Tonight's Sky . ... Observing . ... Sky this Month . ... space flight . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Space weather bulletins . ... Along with observations from NASA's Imager for Magnetopause-to-Aurora Global Exploration (IMAGE) satellite, scientists used the GPS network to study how space weather affects radio reception, specifically GPS-receiver readings. ... Only registered members of Astronomy.com are allowed to comment on this article....

... An Emergency Action Plan (EAP) shall be maintained by the Site Operations Manager and posted on the main bulletin board in the Operations Building. ... All buildings have either key or combination locks on all doors. ... Most building are protected with a central fire alarm system consisting of smoke or heat detectors, ennunciators, radio alarm notification to the fire department, and manual pull stations. ... A. Building Fire: In the event of fire on-site personnel will: . ... 5.0 Safe Area: . ...

... The Third Catalog of Emission Line Stars (Herbig & Bell 1988) and the General Catalog of Herbig-Haro Objects (Reipurth 1994) have both been translated into hypertext and linked to other on-line material. ... In recent years astronomical catalogs have disappeared from the archival literature. ... This spring I received a request from Bo Reipurth of ESO to review his preliminary General Catalog of Herbig-Haro Objects (Reipurth 1994) before it was made available via anonymous FTP from the ESO FTP...

... CV & PUBLICATIONS | ... Nicholls, DC, Dopita, MA, Sutherland, RS, Jerjen, H, & Kewley, LJ " Metal-poor Dwarf Galaxies in the SIGRID Galaxy Sample. ... Nicholls DC, Jerjen, H, Dopita MA, & Basurah, H. (2014) " Nebular Metallicities in Two Isolated Local Void Dwarf Galaxies ", Astrophysical Journal 780, 88 * . ... Sweet SM, Drinkwater MJ, Meurer G, Bekki K, Dopita MA, Kilborn V, & Nicholls DC, " CHOIRS H I Galaxy Groups: The Metallicity of Dwarf Galaxies" , (2014) Astrophysical Journal , 782, 35 * . ...

... Home Articles A History of the First Forty Years of the Amateur Astronomers Association . ... Beyond New York City . ... A History of the First Forty Years of the Amateur Astronomers Association . ... At the 35th Anniversary Dinner of the Amateur Astronomers Association, I had been asked to give a talk on the history of our society. ... The Amateur Astronomers Association had a past even before it began. ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... There are many theories on what will destroy planet Earth, such as nuclear annihilation, global warming or the Sun becoming a red giant. ... It was founded by the board of directors of the magazine `Bulletin of the Atomic Scientists' to draw the public's attention to the nuclear threat, midnight being the time when Doomsday will occur. ... The board has said that climate change has now become the second biggest threat to the existence of the Earth after global nuclear war. ...

... Super Nova Information . ... Site . ... AGREEMENT BETWEEN USER AND rochesterastronomy . ... USE OF COMMUNICATION SERVICES . ... Unless otherwise specified herein, this agreement constitutes the entire agreement between the user and rochesterastronomy with respect to the rochesterastronomy Web Site and it supersedes all prior or contemporaneous communications and proposals, whether electronic, oral or written, between the user and rochesterastronomy with respect to the rochesterastronomy Web Site. ...

... Because you are a newly created organization, we are not now making a final determination of your foundation status under section 509(a) of the Code. However, we have determined that you can reason-ably be expectqd, to- be a pubricly supported organization described sectiongn in )WCl), t futCl lr[1o U-10 Accordingly, you will be treated as a publicly supported organization, and not as a private foundation, during an advance ruling period. ...

... Видимое годовое движение Солнца . ... Чему равна высота точки зенита над горизонтом? ... Эксцентриситет орбиты Цереры равен 0,079, большая ось 5,54 а. е. Чему равно наибольшее расстояние Цереры от Солнца? ... Горизонтальный параллакс Солнца равен 8,8?? ... Горизонтальный параллакс Солнца 8,8??, расстояние от Солнца до Марса 1,5 а. е. Определите линейный радиус Марса, если известно, что во время великого противостояния его угловой радиус составляет 12,5??, а горизонтальный параллакс равен 23,4?? ...