Download or read book Cometary Exploration written by Tamás I. Gombosi and published by . This book was released on 1983 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exploration of Halley s Comet written by Michael Grewing and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1005 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1985/86 apparition of Halley's Comet turned out to be the most important apparition of a comet ever. It provided a worldwide science community with a wealth of exciting new discoveries, the most remarkable of which was undoubtedly the first image of a cometary nucleus. Halley's Comet is the brightest periodic comet, and the most famous of the 750 known comets. With its 76-year period, its recent appearance was truly a "once-in-a-lifetime" observational opportunity. The 1985/86 apparition was the thirtieth consecutive recorded apparition. Five apparitions ago, the English astronomer Edmond Halley discovered the periodicity of "his" comet and correctly predicted its return in 1758, a triumph for science best appreciated in the context of contemporary views, or rather fears, about comets at that time. The increasingly rapid progress in technological development is very much apparent when one compares the dominant tools for cometary research during Halley's next three apparitions: in 1835 studies were made based on drawings ofthe comet; in 1910 photographic plates were used; while in March 1986 an armada of six spacecraft from four space agencies approached the comet and carried out in situ measurements, 1 AU from the Earth. In 1910, nobody could have dreamed that this was possible, and today it is equally difficult to anticipate what scientists will be able to achieve in 2061.
Download or read book Exploration of Halley s Comet written by Michael Grewing and published by Springer. This book was released on 1988 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cometary Exploration in the Shuttle Era written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-10 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive program plan for cometary exploration in the 1980-2000 time frame is proposed. Plans for ground-based observations, a Spacelab cometary observatory, and the Space Telescope are included in the observational program. The cometary mission sequence begins with a dual-spacecraft flyby of Halley's comet. The nominal mission strategy calls for a simultaneous launch of two spacecraft towards an intercept with Halley in March 1986. After the Halley encounter, the spacecraft are retargeted: one to intercept comet Borrelly in January 1988 and the other to intercept comet Tempel-2 in September 1988. The additional cometary intercepts are accomplished by utilizing a novel Earth-swingby technique. The next mission in the cometary program plan, a rendezvous with Encke's comet, is scheduled for launch in early 1990. It is planned to rendezvous with Encke in September 1992 at a heliocentric distance of 4 AU. Following this near-aphelion rendezvous, the spacecraft will remain with with Encke through the next two perihelion passages in February 1994 and May 1997. The rendezvous mission will be terminated about seven months after the second perihelion passage. Farquhar, R. W. and Wooden, W. H., II Goddard Space Flight Center NASA-TM-78033
Download or read book Cometary exploration written by Tamás I. Gombosi and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exploration of Near Earth Objects written by National Research Council and published by National Academies Press. This book was released on 1998-05-04 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comets and asteroids are in some sense the fossils of the solar system. They have avoided most of the drastic physical processing that shaped the planets and thus represent more closely the properties of the primordial solar nebula. What processing has taken place is itself of interest in decoding the history of our solar neighborhood. Near-Earth objects are also of interest because one or more large ones have been blamed for the rare but devastating events that caused mass extinctions of species on our planet, as attested by recent excitement over the impending passage of asteroid 1997 XF11. The comets and asteroids whose orbits bring them close to Earth are clearly the most accessible to detailed investigation, both from the ground and from spacecraft. When nature kindly delivers the occasional asteroid to the surface of Earth as a meteorite, we can scrutinize it closely in the laboratory; a great deal of information about primordial chemical composition and primitive processes has been gleaned from such objects. This report reviews the current state of research on near-Earth objects and considers future directions. Attention is paid to the important interplay between ground-based investigations and spaceborne observation or sample collection and return. This is particularly timely since one U.S. spacecraft is already on its way to rendezvous with a near-Earth object, and two others plus a Japanese mission are being readied for launch. In addition to scientific issues, the report considers technologies that would enable further advances in capability and points out the possibilities for including near-Earth objects in any future expansion of human exploration beyond low Earth orbit.
Download or read book Exploring Comets Asteroids and Other Objects in Space written by Nancy Dickmann and published by The Rosen Publishing Group, Inc. This book was released on 2015-07-15 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: This visually stunning guide gives an up-close look at some of the more elusive objects in space. Definitions of better-known objects, such as comets, as well as lesser-known objects, such as centaurs and trojans, give a basic understanding of space objects and the history of how they were discovered. It also covers the scientists who theorized about their existence and the later scientists who actually discovered them. Readers will also get a look at how these objects can impact our future life and the plans scientists have for how we might learn more about them.
Download or read book Cometary Exploration in the Shuttle Era written by Robert Willard Farquhar and published by . This book was released on 1978 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive program plan for cometary exploration in the 1980-2000 time frame is proposed. Plans for ground-based observations, a Spacelab cometary observatory, and the Space Telescope are included in the observational program.
Download or read book Exploring Comets and Asteroids written by David Anthony and published by Greenhaven Publishing LLC. This book was released on 2017-07-15 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: We think of space as being empty, but that isn’t quite true. In addition to stars, planets, and moons, there are asteroids and comets. Asteroids are rocks that orbit the sun. Comets are chunks of ice and dust that form on the edges of the solar system. This book takes readers on a fun journey into space.
Download or read book Explore Comets and Asteroids written by Anita Yasuda and published by Nomad Press. This book was released on 2017-07-11 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Have you ever wished on a shooting star? Shooting stars often appear when the earth passes through the dust and debris left by a passing comet. Explore Comets and Asteroids! With 25 Amazing Projects takes readers ages 7 to 10 on a fantastic journey through space, where they investigate comets, asteroids, and lesser-known space wonders through 25 experiments and activities designed for curious kids. Readers learn about everything from the first asteroid discovered to many current spacecraft missions. They also investigate famous comets, such Halley’s comet, which returns faithfully every 75 or 76 years. Learning about comets and asteroids means asking lots of questions. Could we live and work on asteroids? Why do we only occasionally see comets? Kids find the answers and more through hands-on projects and experiments that encourage them to be curious about how and why things work. Activities range from mapping the positions of celestial objects to designing spacecraft for asteroid missions. By combining science with activities, fun facts, and cartoons, kids will investigate, create, design, test, and redesign. Explore Comets and Asteroids! inspires kids to want to know more about how these rocky worlds formed and how they may have shaped life on Earth.
Download or read book Literature 1976 Part 2 written by S. Böhme and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 869 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is de voted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documentation of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original literature and publication of the abstracts will not exceed eight months. This time interval is near to that achieved by monthly abstracting journals, com pared to which our system of accumulating abstracts for about six months offers the advantage of greater convenience for the user. Volume 18 contains literature published in 1976 and received before March 1, 1977; some older liter ature which was received late and which is not recorded in earlier volumes is also included.
Download or read book Let s Explore Comets and Asteroids written by Helen Orme and published by Gareth Stevens Learning Library. This book was released on 2007 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents information about asteroids and comets, including what they are made of and where they are found.
Download or read book Exploring Ephesians a Devotional Commentary written by Ashley Day and published by AuthorHouse. This book was released on 2012-02-08 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the year AD 62, the Apostle Paul was a prisoner in Rome. He had been arrested in Jerusalem on a false charge of taking Greeks into the temple. Knowing he would not receive a fair trial in Jerusalem, he had exercised his right as a Roman citizen and appealed to Caesar. Eventually, after many adventures, he arrived in Rome and awaited his hearing before Nero. During this waiting period he wrote four marvelous letters, letters which have enriched the lives of countless people down through the centuries. All four letters were recognized by the Fathers as inspired by God and were incorporated in the Scriptures. This book concentrates on Paul's letter to the Ephesians. The original recipients have long since left this world, but Gods Word is still alive and we shall examine the letter verse-by-verse, with a view to understanding what God is saying to us today.
Download or read book Cometary Science after Hale Bopp written by Hermann Böhnhardt and published by Springer Science & Business Media. This book was released on 2003-01-31 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comet Hale-Bopp defines a milestone event for cometary science: it is the first "really big" comet observed with modern equipment on the ground and from space and due to that; it is considered the new reference object in cometary sciences. At the beginning of a new era in spacecraft exploration of comets and five years after Hale-Bopp's perihelion passage these proceedings of invited and contributed papers for IAU Colloquium 186 "Cometary Science after Hale-Bopp" review the state-of-the-art knowledge on comets, the icy, dusty and most primordial left-overs of the formation disk of our own solar system.
Download or read book Wanderers in Space written by Kenneth R. Lang and published by CUP Archive. This book was released on 1991-03-21 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: How were the features on the Moon created?. What is the evidence for past or future life on Mars? What might cause the Earth to become as hot and steamy as Venus? . Why do some say that a colliding asteroid wiped out the dinosaurs 65 million years ago? From the earliest of times the human race has pondered upon the nature of the Heavens. The moons and planets have changed from mere points of light to fascinating, diverse worlds. Spacecraft have visited all the planets known to ancient people. Human beings have visited the Moon, and robot spacecraft have landed on Venus and Mars. This book presents the result of this captivating voyage of discovery, recording more than two decades of extraordinary accomplishments. The voyage starts with the still, silent and lifeless Moon. Then on to the contrasting world of Mars with its towering volcanoes and deep canyons. The exploration continues across asteroid belts and icy comets to the outer planets where Voyager II revealed cyclonic storms, liquid hydrogen and helium rain and the beautiful pink and blue dynamic world of Neptune. This book includes numerous photos from spacecraft as well as a few works of modern art. They provide the best available metaphors and images of the previously invisible worlds.
Download or read book Our Worlds written by Alan Stern and published by Cambridge University Press. This book was released on 1999-02-11 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our Worlds provides a rare "insider" look into the universe and planetary science during the current golden age of space exploration. Readers are guided on an exciting voyage of discovery by eight distinguished researchers who explore the universe with cutting edge techniques. From Chief Scientist on NASA's New Millennium Program Ellen Stofan to planetary theorist Bill McKinnon, each writes from a personal point of view, sharing to the fullest the science and emotion found in the most enticing discoveries and the wonders of the solar system. This volume gives readers an up-close view of Mars, Venus, and the Moon; a trip with Halley's Comet; a visit to the moons of Io, Titan, and Triton; and the ability to experience asteroids in their natural element. Coverage details the most current knowledge of the solar system learned from space missions, including Magellan and Galileo. This volume fully captures the breadth of planetary science, from inner to outer worlds, from telescopic to robotic exploration, and provides an unique glimpse into the drives and interests of the men and women behind the science. It is the most encompassing book on the subject to date and will interest anyone who looks at the night sky and wonders what it would feel like to be able to get a closer look. Alan Stern is a planetary scientist and astrophysicist with both observational and theoretical interests. He is the leader of the Southwest Research Institute's Geophysical, Astrophysical, and Planetary Science group located in Boulder, CO.
Download or read book Cometary Exploration written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
