... HST . ... Data . ... HST Peer Review Process . ... HST Overview . ... Cycle 24 Announcement . ... Retrieving HST Data . ... HST imaging should resolve the galaxy into more than 100 million stars, all with common distances and foreground extinctions. ... Recently, deep images from the ACS camera aboard HST provided conclusive evidence that several massive intermediate-age star clusters in the LMC and SMC present multiple main-sequence turn-offs (MMSTO), and in some cases also dual red clumps. ...

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• HST this week: 359
• HST this week: 352
• HST Cycle 10 Announcement of Opportunity

... 2008 December 6 . Lunar Diamond . Credit Copyright : Deirdre Kelleghan . Explanation: Cameras around the globe pointed skyward this week to capture the spectacular conjunction of a crescent Moon and bright planets Venus and Jupiter. ... From Greystones, County Wicklow, Ireland, her small telescope allowed her to follow the accompanying lunar occultation as a brilliant Venus disappeared behind the Moon's dark edge, then reappeared along the bright lunar limb. ... About APOD | ...

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• APOD: December 26, 1996 - Carl Sagan 1934-1996
• APOD: 2006 December 4 - Movie: The Active Sun
• APOD: December 3, 1995 - An X-ray Hot Supernova in M81

Statistics of sunspot activity . The sunspot indices . My observations . NGDC's observations . The solar regions . ... 2015 . ... December . ... December, 2015 . Visual indices of solar activity by author's observations . ... Average . ...

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• The Sunspot Observer - Average annual indices of solar activity NGDC -

... ESO Science Newsletter December 2015 . 17 Dec 2015 . ... This newsletter is a summary of recent ESO Science Announcement items. Follow the links or visit ESO Science Announcements to read more. ... Read more . ... The allocation of ESO telescope time for Period 97 (1 April БЂ“ 30 September 2016) is expected to be emailed in the week beginning 21 December 2015. ... ESO Workshop, ESO Headquarters, Garching, Germany, 27 June БЂ“ 1 July, 2016 . ... Joint ESO, ALMA, NAOJ, NRAO Workshop. ...

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• ESO - ESO-Enews #25: December 2012
• ESO - ESO-Enews #20: December 2011
• ESO - Past Conferences and Workshops in Chile and Latin America

... Within the transnational Access program of SOLARNET, European investigators can apply for observing time with the European instruments IBIS and ROSA , which are installed at the Dunn Solar Telescope of the US National Solar Observatory ( DST/NSO ). ... Periodic calls for proposals will be published for requesting SOLARNET observing time with the European instruments IBIS and ROSA, installed at the Dunn Solar Telescope of the US National Solar Observatory (DST/NSO). ... SOLARNET Access . ...

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• Arcetri Star-Formation Group Publications
• Arcetri Solar Physics Group: Solar Activity
• Hubble Observations Shed New Light on Jupiter Collision

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Although the comet itself never comes dangerously close to the Earth, the particles of dust that it has shed during its many past passages through perihelion found their way into the Earth's atmosphere, appearing as meteors in the cold December sky. ... Animation 1 . ... An Ursid meteor captured by the Armagh Observatory's NE-facing meteor camera in the early morning of 23rd December. ... Meteor Showers Online . ...

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• Geminid Meteor Shower: 13 to 16 December 2008 | International Year of Astronomy
• Living in the Sun's Atmosphere: Monday 8 December 2008 | International Year of
• C.J. Butler, Research Astronomer

ATNF ATUC Memorandum To: ATUC From: Jim Lovell Date: 2005 November 21 Subject Tidbinbilla report 1. 70m Observing statistics for July to December 2005. Currently there are 9 active proposals and observations have been completed for 2 of these. ... Tidbinbilla Support. ... As an initial step, Erik Muller has been spending some time on Tidbinbilla support this year and had been involved in developing observing software to support on-the-fly mapping. ... OTF Mapping. ...

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• Photo Gallery - Gornergrat
• VSOP Observing Schedule
• Travel and Observations

... It was an overnight trip that had been planned for several months in advance, a Project ASTRO event that would also include a half-day study of the solar system and observations of the Sun. While viewing the crescent Moon, the students began asking about the craters. ... Do we need to start astronomy education earlier than fifth-grade? ... The ASP's Project ASTRO has prepared a catalog of projects in astronomy education to which anyone can apply or from which anyone can request materials. ...

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• ASP: December's Total Lunar Eclipse
• ASP: Using Multicultural Dimensions to Teach Astronomy
• Astronomical Society

... Magnetic storms online . ... Geomagnetic activity forecast . ... December : 2015 . ... No magnetic storm is expected . From 2 December 2015 to 28 December 2015 the following magnetic storms and disturbances are expected: . December 06, 2015 geomagnetic disturbances . ... December 08, 2015 geomagnetic storm of level G1 (minor) . ... December 21, 2015 geomagnetic storm of level G2 (moderate) . ... December 16, 2015 geomagnetic storm of level G1 (minor) 2 December 2015 - 28 December 2015 . ...

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• Space weather forecast December 04, 2015
• Space weather forecast December 02, 2015
• Space weather forecast December 03, 2015

... It was designed to observe the solar wind approaching Earth, from a position near the Lagrangian point L1, and it is part of the International Solar-Terrestrial Physics (ISTP) Initiative . ... The original plan called for "Wind" to approach its final station over two years, undergoing two close encounters with the Moon to boost its speed. ... If however the object is moving , the encounter is not symmetric, and in the end the spacecraft may have gained or lost speed, depending on its trajectory. ...

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• Space Research Institute (IKI) Seminar
• The Second Announcement
• INTRODUCTION TO STUDY OF DECEMBER 22-23, 1996 EVENT INTERBALL Multi-Satellite

... It was designed to observe the solar wind approaching Earth, from a position near the Lagrangian point L1, and it is part of the International Solar-Terrestrial Physics (ISTP) Initiative . ... The original plan called for "Wind" to approach its final station over two years, undergoing two close encounters with the Moon to boost its speed. ... If however the object is moving , the encounter is not symmetric, and in the end the spacecraft may have gained or lost speed, depending on its trajectory. ...

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• Sun [Oulu]
• Plasma source [Oulu]
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