... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

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• Armagh Observatory
• Sun Earth Day
• Armagh Astropark

... 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. ...

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• JSC Celebrates 40 Years

... 11.10.2012 . ... Credit Copyright: NASA , NOAA , GSFC , Suomi NPP , Earth Observatory , . ... The spectacular waves of visible light emission rolling above the Canadian provinces of Quebec and Ontario in the upper half of the frame are the Aurora Borealis or northern lights. ... October . ... October 2012 . ... 2011 2012 . ... Publications with keywords: aurora borealis . Publications with words: aurora borealis . ... Alaska Aurora Sequence . ... Reflected Aurora Over Alaska . ...

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• XWare > APOD
• Journal "Peremennye Zvezdy"
• Астронет > Comet Hyakutake Finder Chart for Early April

... Planets . ... The planets were found using the HARPS instrument on the 3.6m telescope at ESOтАЩs La Silla Observatory. ... A planet in orbit around a star causes the star to regularly move towards and away from observers on Earth. ... One newly discovered planet, HD 85512 b, is best hope found so far for a habitable exoplanet. ... The HARPS team so far have found that about 40% of stars similar to own Sun have at least one planet smaller than Saturn (which is 95 times more massive than Earth). ...

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• Kepler-10c: the First Mega-Earth | Astronotes
• The One Year Crew | Astronotes
• Apollo 17 | Astronotes

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. June 6, 1997 . Boosting Compton . ... Explanation : Even great observatories need a boost from time to time -- including the orbiting Compton Gamma-Ray Observatory . Sparkling reflections and the bright limb of the Earth are visible in this 1991 window view of Compton's release into orbit by the crew of the Space Shuttle Atlantis. ...

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• APOD: June 23, 1995 - Gamma Ray Sky Map
• APOD: 2000 April 8 - Compton Observatory In Orbit
• APOD: 2006 April 29 - Skylab Over Earth

STScI . STScI Hosts "Habitable Worlds Across Time and Space" Symposium April 28-May 1 . ... What is STScI . ... Spring Symposium Poster . ... During the four-day symposium "Habitable Worlds Across Time and Space," scientists from diverse fields will gather at the Space Telescope Science Institute in Baltimore, Maryland, on April 28 through May 1, to discuss the formation and long-term evolution of terrestrial bodies throughout the various phases of stellar and Galactic evolution. ...

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• Habitable Worlds Across Time and Space
• HST Primer for Cycle 22
• GOODS: The Great Observatories Origins Deep Survey

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Parkes | ... Cosmic engine for senior students . ... The Sun . The Sun is vital for life on Earth. ... The Sun is a typical star, emitting electromagnetic radiation and particles that influence the Earth . ... In the meantime you can view material on the Sun and its influence on Earth written for the first version of the new syllabus here . ...

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• Cosmic Engine: Early Models of the Universe
• ATNF Colloquium
• Archive of VLBI Observations Majordomo List

... Transits do not happen every time Mercury passes between the Earth and Sun because their orbits are not in exactly the same plane, as we will see in this activity. ... Transits of Mercury occur at only two times during the year (but not every year). ... Can you tell which two months the orbits of Earth and Mercury are in line with the Sun? _____________________ and ________________________ [pic] ----------------------- ( Transits of Mercury occur at only two times during the year (but not every year...

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• http://www.astrosociety.org/edu/activities/mercurytransitorbit.pdf
• ASP: Monster Comet Promises Big Show
• ASP: Searching for Earth's History Among Earth-like Worlds

... Not so long ago, Space Scoop explained that right this moment you re hurtling through space at hundreds of thousands of kilometres per hour! ... We call the time it takes Earth to complete one full rotation a day . ... But the length of one rotation and one orbit can be different on other planets. For example, one orbit (or year ) on Mercury takes just 87 Earth days. ... The length of day is also different on other planets. For example, one day on Jupiter lasts just 10 Earth hours. ...

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• ESO - Science Announcements
• High Resolution HST Images of Pluto and Charon (ESO Press Release 09/94)
• ESO - Guaranteed Time since Period 79

... This year's eclipse is unique in duration. ... Although, at the present time, there are 6 solar observatories belonging to leading space agencies in orbit around the Earth, the eclipse of 22 July, 2009, will only be seen by two of them: the Russian CORONAS-PHOTON satellite equipped with TESIS telescopes and Japan's HINODE satellite fitted with an XRT space telescope. ... TESIS will be the first of the two devices (and the very first on Earth) to witness the solar eclipse. ...

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• Project's diary
• Earth Witnesses the First Powerful Areas of the New Solar Cycle
• The X-ray Solar Eclipse

The Sun is our nearest star and the source of energy for life on Earth. ... For centuries astronomers wondered whether they were clouds floating in the Sun's atmosphere, but we now know that they really are huge regions of magnetic field, about as intense as the field at the poles of an iron magnet. ... Such abrupt events were named solar flares , and what made them especially interesting was that occasionally, after a prominent flare, a magnetic storm would erupt on Earth. ...

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• Spacecraft Observing the Sun and the Heavens above
• Spacecraft
• The Wind Spacecraft

... Records were made this January when the RadioAstron satellite was joined by ground-based telescopes, forming a radio telescope 220,000 km across тАУ roughly 20 times larger than the Earth. RadioAstron , a Russian orbital telescope of 10 meter diameter, joined with ground-based observatories to resolve objects 50 times smaller than is possible with the Hubble Space Telescope. ... Images: . The RadioAstron spaceantenna observes a celestial radio source simultaneously with ground-based dishes. ...

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• Arecibo Observatory observations of 2005 YU55
• Arecibo Radar Discovers Triple Near-Earth Asteroid
• Solar System Studies at AO

... Launch Date/Time: 1966-03-31 at 10:48:00 UTC . ... The Luna 10 spacecraft was launched towards the Moon from an Earth orbiting platform. ... Scientific instruments included a gamma-ray spectrometer for energies between 0.3--3 MeV, a triaxial magnetometer, a meteorite detector, instruments for solar-plasma studies, and devices for measuring infrared emissions from the Moon and radiation conditions of the lunar environment. ... Luna 10 measured the magnetic field of the moon intermittently for 2...

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• Appendix C - The Probability of Collisions with Earth
• NEAR recorded on 23 January 1998(frame 1)
• Educator's Guide to Spotting the Shuttle

... Comments, Opinions Publications Dnepr Program . Dnepr launch record 17 August 2011. Cluster Launch of Dnepr LV 22 August 2013 KOMPSAT-5 Launch 21 November 2013. ... The Sych-2 satellite is being developed as a part of the space optical-range Earth observation system by the State Design Office of Yuzhnoye and built by the Industrial Association Yuzhny Machine Building Plant in cooperation w ith other space industry entities upon the state order of the National Space Agency of Ukraine . ...

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• The first national Earth remote sensing satellite of Turkey will be placed into
• RapidEye Satellites Successfully Launched into Orbit on Dnepr Launch Vehicle
• ISC Kosmotras will provide launch services for two Earth-observation satellites

The Chandra X-ray Observatory is the third of NASA's four " Great Observatories ", and is used by Astronomers to study some of the more extreme objects and events (in terms of temperature and mass) in the Universe. ... This page uses Javascript to show you the timeline for Chandra, NASA's X-ray Observatory. ... If you can not enable Javascript, much of the information is available at the Chandra X-ray Center . Further information on Chandra can be found at: . ... The Chandra X-ray Center . ...

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• Time Warp - Links
• Chandra's Twitter feed
• The Telescope and Dome

... Asteroid . ... In case you didn't hear about it, which you probably didn't: On Jan. 7, an asteroid 1,000 feet across -- nearly three times the current diameter of Marlon Brando -- barely missed the Earth, which is most likely your planet of residence. ... What if this asteroid had hit the Earth? ... As it happens, the American Astronomical Society was holding a conference in Washington AT THE VERY SAME TIME as the asteroid nearly hit the Earth. ...

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• Winer Observatory - Observations of Near Earth Asteroid 2008QT3

... November 26, 2001 at 21:24:12 Moscow time the Progress M1-7 transport cargo vehicle with Colibri microsatellite (MS) accommodated in the payload compartment was launched from the Baikonur cosmodrome to the near-earth orbit in compliance with the International Space Station (ISS) flight program. ... According to the ballistic analysis made by S.P. Korolev RSC Energia specialists, MS will make an atmospheric re-entry and be destroyed on 3-4 May 2002. ... Official WEB-site of S.P.Korolev RSC Energia . ...

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• INTERNATIONAL SPACE STATION
• OFFICIAL PRESS RELEASE - S.P. KOROLEV ROCKET & SPACE CORPORATION ENERGIA
• S.P. Korolev RSC Energia - International Space Station

... Current APO Weather . ... Search Site . ... Information for New Users . ... Technical Staff pages . Night Logs and Mailing Lists (maintained by APO) . ... Technical Documents and Database Search . ... Observer's Documentation and Procedures . ... Problem Reporting and APO Technical Documents Database Search . ... APO Drawing/Document Management Procedures . ... APO Technical Documents Database Search . Home Astrophysical Research Consortium . ... Mail Lists (maintained by APO) . ...

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• Untitled Document
• Manastash Ridge Observatory Home Page

... 142,800 Mean density (kg/m^3) .. ... 5.203 Rotation period (length of day in Earth hours).. 9.8 Revolution period (length of year) (in Earth years). 11.86 Obliquity (tilt of axis) (degrees).. 3.08 Orbit inclination (degrees).. 1.3 Orbit eccentricity.. 0.048 Mean surface temperature (K)........................ 120 (cloud tops) Visual geometric albedo.. 0.44 Atmospheric components.............................. 90% hydrogen, 10% helium, .07% methane Rings.. ...

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• Intelligent Life On Earth?
• Historical Cosmologies
• Venus and Mars

A Brief History of the Discovery of Cosmic Gamma-Ray Bursts - draft april 17, 1995 - J.Bonnell In October of 1963 the US Air Force launched the first in a series of satellites inspired by a recently signed nuclear test ban treaty. ... The event appeared to be a cosmic gamma-ray burst but at the time the constellation of satellites did not have sufficient timing resolution at the trigger to make a good determination of direction to the burst source. ...

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• http://xray.sai.msu.ru/~polar/html/curic.html
• Космические лучи и климат