... 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 . ...

Astronomy Picture of the Day . Evolution of the Moon . ... The Moon was likely created from debris expelled when a Mars-sized object violently impacted the Earth about 4.5 billion years ago. ... Rocks large and small continued to impact the surface, including a particularly large impact that created Aitken Basin about 4.3 billion years ago. A Heavy Bombardment period then continued for hundreds of millions of years, creating large basins all over the lunar surface. ... Apogee Full Moon . ...

... 2012 March 20 . Evolution of the Moon . Video Credit: LRO , SVC , NASA . ... The Moon was likely created from debris expelled when a Mars-sized object violently impacted the Earth about 4.5 billion years ago. ... Rocks large and small continued to impact the surface, including a particularly large impact that created Aitken Basin about 4.3 billion years ago. ... Over the next few billion years lava flowed into Earth-side basins , eventually cooling into the dark maria we see today. ...

Projectile Motion: In Aristotle's view, objects moved parallel to the Earth's surface until it was time (i.e. it was their destiny) to fall back to the earth . Aristotle believed that the "natural" state of massive objects was to seek the center of the Earth. When a stone is launched, an impetus is given to it to disturb it from its natural condition. ... Archimedes' catapults lobbed quarter-ton stones at the attacking Roman ships, quickly destroying the clumsy Roman siege engine. ...

... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...

... The craters were caused by the impacts of comets and asteroids. ... In fact, up to a diameter of about 10 meters (33 feet), most stony meteoroids are destroyed in the atmosphere in a terminal explosion. ... The famous meteor crater in northern Arizona, some 1.2 kilometers (4,000 feet) in diameter and 183 meters (600 feet) deep, was created 50,000 years ago by a nickel-iron meteorite perhaps 60 meters (197 feet) in diameter. ... These range in diameter from a few meters to about 8 km. ...

... Pre-university education . ... Samara region . SSAU History . SSAU roadmap . ... Scientists of Samara State Aerospace University (SSAU) develop a unique 3D-printer for chocolate confectionery printing. 3D-printer for chocolate printing is being created in SSAU Centre for Robotic Complexes and Mechatronic Systems. ... Know-how of the scientists of Samara State Aerospace University in that they were developed unparalleled chocolate delivery and cooling systems in 3D-printer. ...

... Does the time it takes different methods to create all the elements coincide with the universeт??s accepted age? ... Illinois Urbana-Champaign) Different kinds of stars create elements at different rates, all of which are consistent with the age of the universe. Get instant access to subscriber content on Astronomy.com! ... Registration is FREE and takes only a few seconds to complete. If you are already registered on Astronomy.com, please log in below. ...

... Creation of Space transportation system on the base of large length rope utilization . ... A given address contains the proposal to equip the International Space Station with the long rope and to create on that base a Space transportation system. ... A given system has the multifunctional purpose. ... The rope system could be the base for creating of alternative system of station angular orientation. To utilize the rope system to launch small satellites from the station and to return them back. ...

... Our Galaxy . ... Stars . ... Space Flight . ... NGC 2841: a spiral galaxy some 46 million light years away. ... It is especially hard to explain this process of star birth in some spiral galaxies. ... Targets include both star clusters and galaxies, and star formation rates seen range from the starburst galaxy M82 (the Cigar Galaxy) which is creating about ten new stars in its core alone every year to the much less fecund star producer NGC 2841. ... Tweets that mention Baby stars of NGC 2841 | ...

What will happen when the fragments hit Jupiter? ... All the fragments will enter Jupiter's atmosphere at an angle of 42 degrees from the vertical and impact near a latitude of 44 degrees south, but on the back side of the planet as seen from Earth (about 10 degrees in longitude behind the edge of Jupiter, as seen from Earth). ... Any body moving through an atmosphere is slowed by atmospheric drag, by having to push the molecules of that atmosphere out of the way. ...

God Science Forum Message . Forums: . ... A Re-Visit Revision In The Making: An Evolution In Creation . ... http://www.astronomy.net/forums/god/messages/3.shtml?base=2550 . ... God is based on faith; faith is created by God; faith is kept thru time with faith; what is there in creation greater than faith? ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Database Development for Solar System Small Bodies' Orbital Evolution Based on Modern Mathematical Models and Methods . ... Research of the orbital evolution of 6163 asteroids belonging to Apollo, Amor, Aten groups and 197 short-period comets was performed for the time period from 1800 to 2206. 815 objects have been identified among asteroids approaching closely to inner planets, in particular 612 objects passing through the Earth's sphere of action. ...

... 2) get instructions for proceedings from here . ... Chris Sterken (chair), Ulli K ufl (co-chair), Mike A'Hearn, Hermann Boehnhardt, Michael Combi, Yan Fernandez, Marco Fulle, Luisa Lara, Casey Lisse, Jean Manfroid, Karen Meech, Javier Licandro, Heike Rauer, Rita Schulz, Gerhardt Schwehm, Diane Wooden . ... Ulli K ufl or Chris Sterken . ... there will be proceedings in the ESO / SPRINGER series (eds. Ulli K ufl & Chris Sterken); link to retrieve latex-kit . ... Deep Impact Specific Questions . ...

Why do people want to explore Mars? At the present time Mars topography is known sufficiently well to make a Martian map; we cannot distinguish yet the settlements of the inhabitants of this planet, but sooner or later we probably will be able to achieve this as well.. ... US spacecraft "Mariner-4" performed the first successful flyby and transmitted to the Earth twenty one photos of Mars' surface. ... It is supposed that large subsurface ice reservoirs or liquid water exist on Mars. ...

AUTOMATIC CREATION OF THE HYPSOMETRIC MAP OF VENUS. ... The hypsometric map of Venus (1:45M) created under editing of Dr. Rodionova gives the representation of the planet relief on the basis of up-to-date data. ... The requirement was to preserve contour polygons with the areas more than 10 000 sq. km at the Venus surface, which corresponded with areas approximately more than 5 sq. km at the map. ... The other side of Venus map has been prepared. ... Surface height histograms for both Venus and Earth. ...

A very important stage in a story of formation of any new science is the shift from discussion of situation which are possible but do not occur in practice due to some reason to recognition of real phenomena of interest. ... We suggest to consider computer viruses as this new specific form of life which is coming in the contact with our form of life. ... Computer life has been created by human being, the role of independent evolution of computer viruses seems to be still negligible. ...

Next: Гвоздев Александр Александрович (ЯрГУ) Up: abstracts Previous: Гусаков Михаил Евгеньевич (ФТИ РАН) . Antiprotons Stored in the Planetary Magnetospheres as a Fuel for Future Space Missions We show that the Earth and other planets having the magnetospheres possess the antiproton radiation belts created due to the galactic cosmic ray nuclear interactions with the residual atmosphere. ...

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

... Table files like the ones created in the section on imcnts can be displayed, printed and manipulated using the tasks contained in the stsdas.ttools package. ... sp> tables # Load the relevant package ta> tprint rp90_cnt prpar=yes # .tab extension assumed # the hidden parameter prpar is set to display the header # as well as the data ta> tprint rp90_cnt # Displays only the data info ta> tprint rp90_cnt prdata- prpar+ # Displays only the header info ta> tprint rp90_cnt prparam=yes | ...