141. Asteroids asteroids. On the first day of January 1801, Giuseppe Piazzi discovered an object which he first thought was a new comet. Kowal 1977 More about asteroids. http://www.gly.bris.ac.uk/www/teach/virtrips/nineplanets/asteroids.html

Asteroids O n the first day of January 1801, Giuseppe Piazzi discovered an object which he first thought was a new comet. But after its orbit was better determined it was clear that it was not a comet but more like a small planet. Piazzi named it Ceres, after the Sicilian goddess of grain. Three other small bodies were discovered in the next few years (Pallas, Vesta, and Juno). By the end of the 19th century there were several hundred. S everal hundred thousand asteroids have been discovered and given provisional designations so far. Thousands more are discovered each year. There are undoubtedly hundreds of thousands more that are too small to be seen from the Earth . There are 26 known asteroids larger than 200 km in diameter. Our census of the largest ones is now fairly complete: we probably know 99% of the asteroids larger than 100 km in diameter. Of those in the 10 to 100 km range we have cataloged about half. But we know very few of the smaller ones; perhaps as many as a million 1 km sized asteroids may exist. T he total mass of all the asteroids is less than that of the Moon Ida and 951 Gaspra were photographed by the Galileo spacecraft on its way to Jupiter. The

142. Our Solar System An overview of the sun, the nine planets, asteroids, comets, and other links. http://www.geocities.com/zinazora/solarsystem/index.htm

Our Solar System: Some scientists think the Solar System began as a cloud of dust and gas. Gravity pulled the cloud in and out, making it smaller and dense (thicker). As it shrank, the cloud heated up and the Sun formed. Some of the clouds flattened out and shaped into a disc, which spun around the new Sun. Particles of gas and dust within the disc bumped each other, which made them stick together and form large lumps. These lumps grew into planets, all of them revolving around the Sun. One group of rocky lumps never grew into planets and these are what we call "asteroids". All information and pictures are courtesy of NASA. Sun The Nine Planets Asteroids Comets ... Links For questions or comments contact me at brooksde@hayscisd.net.

143. Asteroids.Zona De Juegos Online Translate this page asteroids si lo que te gusta es disparar, este es tu juego, bastante divertido . Juegos para bajar, además juegos online a decenas de Juegos gratis. asteroids. http://www.publispain.com/flash/Asteroids.htm

Asteroids Juegos Flash : Ver todos Nota: los Juegos en flash se cargan solo una vez directamente en su Pc. Los juegos flash pueden tardar entre 1-2 min. según su conexión a Internet. (Cada juego flash suele pesar entre 150 y 500Kb) Si no ves el juego cargate el plug in de Flash haciendo click en este boton ... O Visita Otros Webs Recomendados Juegos Online Trucos Moviles Humor Programas Gratis © PubliJuegos, web del Grupo Publispain.com 1.998-2004. Prohibida la reproducción de estas páginas sin consentimiento del autor ?id=ABv/xwj/loyTIrhL5l3vBrJrsBcQ" border="0" nosave width="18" height="18">

144. Free Online Arcade Games From Zap Arcade Online versions of classic arcade machine games including Space Invaders, Defender, Pong, and asteroids. http://www.zaparcade.com/

Free online arcade games from Zap Arcade are fully featured, super quick to download, and run straight in your browser! To play these free online arcade games just click the links on the left... The online arcade games here include versions of arcade classics, including Invaders, Defender, Asteroids and Pong, as well as many more. We will always be adding more quality free online games to this site, so keep checking back for updates! The Arcade Games section of this site contains links to what we think are the best free online arcade games on other sites. This is a truely fantastic selection of online arcade games, and the quality of some of these arcade games is oustanding! We also have a Crediplay section to our site. This section contains a selection of storming free online arcade games which are a total joy to play! The games are of course completely free to play, although you have the option of playing in an online tournament for a nominal entrance fee in which you can win cash prizes. Entering an online tournament is exciting, and gives a whole new thrill to your online arcade gaming experience! To play the Crediplay online arcade games for free all you have to do is register, which only takes a few seconds because all you need to give is your name and email address. You can then play the games straight away. If you want to experience the thrill of playing in an online arcade game tournament for a chance to win a cash prize you will need to enter some further details, but full instructions are given on the site.

145. Universe Today - Asteroids Change Colour With Age asteroids Change Colour With Age. The team used data from the Sloan Digital Sky Survey (SDSS), which has accurate colour measurements on 100,000 asteroids. http://www.universetoday.com/am/publish/asteroids_change_colour_age.html

NEWS ARCHIVE TOPICS FORUM ... LINKS Search Asteroids Change Colour With Age Summary May 20, 2004 ) A team of astronomers led by the University of Hawaii's Institute for Astronomy have found evidence that asteroids change colour as they get older. The team used data from the Sloan Digital Sky Survey (SDSS), which has accurate colour measurements on 100,000 asteroids. They found that asteroids turn redder over time because of the constant bombardment of radiation from the Sun and cosmic rays. With more research, astronomers should soon be able to judge the age of an asteroid just by its colour. Full Story Image credit: NASA In an article published today in the journal Nature, a team led by Robert Jedicke of the University of Hawaii’s Institute for Astronomy provides convincing evidence that asteroids change color as they age. David Nesvorny, a team member from the Southwest Research Institute in Boulder, CO, used a variety of methods to estimate asteroid ages that range from 6 million up to 3 billion years. Accurate color measurements for over 100,000 asteroids were obtained by the Sloan Digital Sky Survey (SDSS), and catalogued by team members Zeljko Ivezic from the University of Washington and Mario Juric from Princeton University. Robert Whiteley, a team member from the USAF Space and Missile Systems Center in Los Angeles, points out that “the age-color correlation we found explains a long-standing discrepancy between the colors of the most numerous meteorites known as ordinary chondrites (OC) and their presumed asteroid progenitors.” Meteorites are chips of asteroids and comets that have fallen to Earth’s surface.

146. OpenUniverse: A Free Space Simulator open source Win95/98/NT/2000 or Unix/Linux OpenGL Newest NASA data creates a fast 3D display of our home solar system, 25000 stars, galaxy, planets, moons, asteroids and even controllable spacecraft. http://www.openuniverse.org

Contents document.write('MENU') Last update: Nov 14, 2001 Click here for the ultimate FREE space simulator News Nov 14, 2001 : Big news (kinda). I´m pretty sure most of you have noticed OU hasn´t been updated for a long long time. We´ve decided not to waste time and focus our effort in helping Chris Laurel out. He´s doing an amazing job with Celestia and we´ll try to contribute as much as we can. I´m not saying OU is dead but it´s very unlikely you´ll see any update soon. WHAT ARE YOU WAITING FOR? GO DOWNLOAD CELESTIA Sep 12, 2001 : Hello, as Slashdot has put it before: Normally we don't post this. But in this case... We (all of us behind OU) state our solidarity, support and respect to the people in the United States, New York and Washington. Our thoughts are with the killed, the injured and the shocked. This is the time for the civilized world to stand together. In these hours we are all americans. Axel Jul 24, 2001 : Hi folks! This is another incredible thing for Raul and me. We reached 150.000 pageviews (= visitors in our case) until we started OpenUniverse. We'd like to thank you. Axel Jun 29, 2001

147. KidsAstronomy.com Asteroid Game Use the keyboard controls described below to maneuver your ship, destroying as many asteroids as you can while avoiding collision with them. Large asteroids. 25. http://www.kidsastronomy.com/asteroid/

The Asteroid Game Puzzles Crossword Puzzles (Online) Hangman Memory Game ... Quiz Color Coloring Book (Online) Star Painter Coloring Book (Printable) Laugh Mutation Station Space Jokes Space Libs More Fun Make-A-Planet Movies Postcards Virtual Star Explorer Video Games Asteroids Bop-it Captain Space Froggy Falling Rocks ... Moon Defender Neb Crabulous' Escape Pin Ball Space Invaders Star Wars UFO ... Zogs Wait for the applet and sounds to finish loading, this may take a minute or two. The game screen will show "Game Over - 'S' to Start" once everything is ready. In the meantime you can review the instructions below. Note: If the game doesn't seem to be responding to key presses, click your mouse pointer in the game area. Playing the Game Use the keyboard controls described below to maneuver your ship, destroying as many asteroids as you can while avoiding collision with them. Also watch for the flying saucers armed with guided missles. If you warp into hyperspace, your ship will momentarily disappear then reappear on another part of the screen, gradually fading in. During this time the ship is invunerable. Likewise, when your ship is destroyed, a new one will appear in the center of the screen. You can still maneuver and fire during this time so if you are in imminent danger, you have a couple of seconds to get out of it.

148. GameYard.com: Play Best Free Online Games On Your Windows PC - Arcade Puzzle Str Online remakes of classic arcade, puzzle, shooter, and strategy games including versions of Tetris, Arkanoid, asteroids, Minesweeper, and Lines. http://www.gameyard.com/online/

Search GameYard: Site map Enter your e-mail here to obtain latest info on games, discounts and other news: Your address will never be sold, leased or in any other way disclosed. Useful links Do not miss new GameYard games, Download games Ice Mania Click Buster Smart PaintBall ... Mosaic If you have any questions, suggestions or problems, please send an e-mail to our staff We'll always be glad to help. Vote for us on Top100GameSites Enter The Top 100 Sites Mosaic A cool puzzle game, clear the shifting mosaic pieces of the same color. Arkanoid Arcade amateurs' favourite game. The classics is never trite! Tetris The all-time classic game - just play it and have great time! Lines Arrange the color balls in lines, and do it quickly as new ones appear. Pentix Another variation of Tetris - more different figures, more fun. Arkanizer (lite) New variation of Arkanoid. Kick off all the spheres above by shooting them all with a small ball. Blaster (lite) Shoot at the asteroids that are of the same color with the shooting planet in the center of the orbit. Incoming (lite) This game resembles the famous "paratroopers" game. Shoot at the falling down planets and have fun!

149. Cydonia, Asteroids & Comets & Exploded Planets - Cherubim, Seraphim, Planet Raha Cydonia, asteroids, City of Angels on Mars. Noted astronomer Tom Van Flandern, discusses the exploded planet theory, asteroids and comets http://www.mt.net/~watcher/stones.html

The " Stones of Fire " and Pre-Adamite Civilizations Satan's Secret History and the Monuments of Mars The Bible describes Satan, commonly called Lucifer, as having had a place in heaven. Where in heaven did satan / lucifer dwell, and what happend to this being? Our research suggests satan, or lucifer, dwelt in a literal location in the heavens... which when destroyed left the debris we now see as asteroids and comets. "How art thou fallen from heaven, O Lucifer, son of the morning! The Mysterious Parent Planet Noted astronomer Tom Van Flandern, discusses the 'exploded planet' theory, asteroids and comets: " ... is Shoemaker- Levy 9 an asteroid or a comet? This is an issue being debated in the journals right now. In the exploded planet hypothesis there is no difference. Asteroids and comets are the same thing, except that comets were thrown out to a greater distance, so by being away from the Sun for the few million years they preserved their volatiles, their dust and gas, whereas asteroids have long since had the dust and gas blown away by solar radiation pressure, because they're so close to the Sun for millions of years. Other than that there is no difference. They're both debris clouds [of an exploded planetary parent body] ... " Satellites sent to Mars in 1976 collected information concerning the geologic nature of Mars, and it's atmosphere. The images from the orbiters mapping sequence made it clear that Mars had experienced nearly unimaginable catastrophic episodes.

150. The Atari Library - Atari Arcade Systems Information about Battlezone, Tempest, Centipede, Missile Command, and asteroids. http://www.netlink.co.uk/users/markn/Arcade/arcasys.html

Atari Corporation Systems Atari Pong Atari Battlezone Atari Tempest Atari Centepede ... Atari Asteroids Atari Games Corporation Systems Pole Position Pole Position II Primal Rage Steel Talons If you have any pictures or information about products without information pages or products not listed here, can you please email me with details.

151. Sse.jpl.nasa.gov/features/planets/asteroids/asteroids.html Rudy Rucker s version of the Mike Hall asteroids AppletMike Hall s asteroids Applet,. Altered by Rudy Rucker. The asteroids Applet, or, What I Did During the Millennium s Sunset Play the Game! http://sse.jpl.nasa.gov/features/planets/asteroids/asteroids.html

152. Asteroids Comets Meteors (ACM) A meeting bringing together scientists studying small solar system bodies. Dates and links of past meetings. http://www.astro.uu.se/planet/acm_eng.html

Asteroids Comets Meteors (ACM) Meetings bringing together scientists studying small solar system bodies. The first in this serie was held 1983. ACM I , June 20-22 1983, Uppsala ACM II, June 3-6 1985, Uppsala ACM III , June 12-16 1989, Uppsala ACM 1991, June 24-28 1991, Flagstaff ACM 1993, June 14-18 1993, Belgirate ACM 1996, July 8-12 1996, Versailles ACM 1999, July 26-30 1999, Cornell University ACM 2002, July 29 - Aug 2 2002, Berlin Proceedings from ACM II, III are still available, contact Claes-Ingvar Lagerkvist classe@astro.uu.se

153. Mike Hall And Rudy Rucker's Asteroids Applet background. C toggles the collision feature of having the asteroids bounce off each other. asteroids. The asteroids run away from the bullets. http://www.mathcs.sjsu.edu/faculty/rucker/asteroids/asteroidsj1jar.html

Wait, Click on Game, Press S. S start game. Left/Right Arrows rotate. Up/Down Arrows thrust. Spacebar fire. B black or white. C collide. D details. G godmode . H hyperspace jump. M mute sound. P pause game. R round or square. W wrap or bounce. Wait a minute or three while the files load. Game is ready when it says "Ready to Start New Game." To Play: FIRST CLICK ON THE GAME AREA . . . and then press S. Main Controls. S starts game. Left/Right Arrows rotate the ship. (Hold down for continuous rotation.) Spacebar fires the ship's cannon. (Hold down for continous shooting. If the max number of bullets are active, firing again removes the oldest bullet). H jumps ship through hyperspace to a new location and makes it temporarily invulnerable. Other Controls. Up/Down Arrows thrust the ship forward and backwards (use sparingly). B toggles between a (default) black background and a white background. C toggles the collision feature of having the asteroids bounce off each other. G toggles on a "Godmode" which makes your ship invulnerable.

154. Asteroids For PlayStation At GameSpot Coverage of the PlayStation version, with review, screen shots, and FAQs. http://www.gamespot.com/ps/puzzle/asteroids/

GameSpot Home PC Games PlayStation 2 PS2 Xbox ... Systems document.write(''); About Our Site What's on GameSpot? What's New Today? Free Membership Get Complete Find Games Advanced Search New Releases Top Rated Most Popular ... E3 Coverage All the Latest PS News Reviews Previews Game Videos ... All PS Games Browse by Genre Action Games Adventure Games Driving Games Puzzle Games ... Strategy Games Browse by Platform PC PlayStation 2 Xbox GameCube ... Mobile Get a Game New Games Rentals Game Systems Discuss Games GameSpot Forums See Special Features GameSpotting Let's GameSpot System Advisor Behind the Games ... Windows XP Extras Also Check Out Newsletters Supersites Top 100 Searches Game Cheats ... Asteroids Publisher: Activision Developer: Syrox Developments Genre: Puzzle Release Date: GameSpace Review Previews News Downloads Movies Hints Check Prices good While it might make a better rental than a straight-up purchase, either way you won't go wrong. - James Mielke FULL REVIEW Category: Action General Tech Information : 1-2 Players.

155. Asteroids - Wikipedia asteroids. From Wikipedia, the free encyclopedia. This page is about the computer game. For the planetlike space object, see asteroid. asteroids screenshot. http://en.wikipedia.org/wiki/Asteroids

156. Chapter 20: Meteorites And Asteroids Chapter 20 Meteorites and asteroids. There are now about 10 radarobserved binary near- Earth asteroids, about 1 in 6 of NEAs larger than 200 m in diameter. http://www.williams.edu/Astronomy/jay/chapter20_etu6.html

Chapter 20: Meteorites and Asteroids Links from Chapter Earth Impact Database from the University of New Brunswick Cassini Mission Rosetta Mission Near Earth Asteroid Rendezvous (NEAR) Mission ... Near Earth Objects Page Additional Links Near-Earth Asteroids Near-Earth Asteroids at JPL Asteroid Photo Gallery Kuiper Belt Homepage ... American Meteor Society Leonid Meteor Shower/Storm: www.imo.net www.amsmeteors.org http://www.skypub.com/sights/meteors/leonids/9911leo.html Dr. Donald Yeomans' Leonids Site Loneos Discovers Asteroid with the Smallest Orbit Lowell Observatory press release, May 20, 2004 Flagstaff, AZ The ongoing search for near-Earth asteroids at Lowell Observatory has yielded another interesting object. Designated 2004 JG6, this asteroid was found in the course of LONEOS (the Lowell Observatory Near-Earth Object Search) on the evening of May 10 by observer Brian Skiff. "I immediately noticed the unusual motion," said Skiff, "so it was certain that it was of more than ordinary interest." He quickly reported it to the Minor Planet Center (MPC) in Cambridge MA, which acts as an international clearinghouse for asteroid and comet discoveries. The MPC then posted it on a Web page for verification by astronomers worldwide. It happened that all the initial follow up observations, however, were obtained by amateur and professional observers in the Southwest US. The additional sky positions measured in the ensuing few days allowed an orbit to be calculated. The official discovery announcement and preliminary orbit were published by the MPC on May 13. This showed that the object was located between Earth and Venus (presently the very bright "evening star" in the western sky). In addition, 2004 JG6 goes around the Sun in just six months, making it the asteroid with the shortest known orbital period. Ordinary asteroids are located between the orbits of Mars and Jupiter, roughly two to four times farther from the Sun than Earth, taking several years to go around the Sun.

157. The Solar System Detailed guide to the sun and planetary system, asteroids, comets, meteor hits on Earth and the other planets. http://www.eoascientific.com/prototype/newcampus/space/space.html

General Science Earth Ocean Atmosphere ... Space Credits EOA Home Space Product samples provided by EOA Scientific Systems To purchase products, visit ScienceSchoolhouse.com Earth Science Glossary Interactive Exercises The Solar System Planets The nine planets of our solar system formed at regular distance intervals from the sun. Try and arrange the planets according to their relative distance. Mercury, Venus, Earth and Mars are in one interactive as the inner planets. Jupiter, Saturn, Uranus, Neptune and Pluto are in a second interactive Weight Mass Volume Density Gravity Energy Interactive (The farm) ...more Related Projects Matter and Energy This project is very good. Related Link Pages Each of the following pages contains a set of links for that topic. Space Science Links The Internet Campus is an interactive multimedia science learning web site of: EOA Scientific , a developer of educational software EOA Scientific Systems, Inc., 10 Kidston Road, Captain Spry Center Halifax, Nova Scotia, Canada, B3R 2J7

158. PROJECT CLEA: ASTROMETRY OF ASTEROIDS Clea Home Page, ASTROMETRY OF asteroids, http://www.gettysburg.edu/academics/physics/clea/astlab.html

Clea Home Page ASTROMETRY OF ASTEROIDS Please sign our mailing list Required Software Click Filename to Download Or Icon to Go to FTP Site, These are self-extracting files and will install themselves when you run them on your computer. AstrmLab.EXE -Executables and image files (3.8 MByte) Unknwns.exe -Optional Unknown Fields (13 MByte!) User's guide (Acrobat pdf format) Student manual (Acrobat pdf format) Questionnaires and Pre/Post-Tests (Acrobat pdf format) A Description of the Lab: Purpose: To introduce students to the techniques that astronomers use to discover asteroids and to measure their coordinates in the sky. To show students what is meant by parallax and how parallax is measured. This exercise incorporates software designed to find asteroids using digital images of the sky taken at different times, along with software designed to measure the precise positions of stars on images. It also includes several digital images of asteroids taken at research observatories and documentation for both the students and the instructor. In the first part of the exercise, students view pairs of images of the sky, align them so the stars overlap, and "blink" them to highlight moving objects...asteroids. Once an asteroid is identified, the software can display a chart of the star field around the asteroid by calling up positions of stars from a reference catalog (a selection of the Hubble Guide Star Catalog included with the software). By identifying at least three reference stars from the catalog with stars on the digital images, the software can then proceed to determine the astronomical coordinates of the asteroid (right ascension and declination) to a precision of about 0.1 seconds of arc. Measurements of the asteroid coordinates on several images taken at different time yields the angular speed of the asteroid.

159. Workshop On Scientific Requirements For Mitigation Of Hazardous Comets And Aster NASAsponsored workshop; site offers agenda, abstracts of talks and posters sessions, report and proceedings, and a funny cartoon. http://www.noao.edu/meetings/mitigation/

NOAO Meetings Mitigation Workshop Workshop Format Workshop Agenda Invited Talks Abstracts (68KB pdf) Poster Talks Abstracts (65KB pdf) Extended Abstracts Volume Workshop Report available now! Workshop Proceedings in press! Press information Scientific Organizing Committee Local Organizing Committee Humor Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids (Workshop Sponsored by NASA; co-sponsored by Ball Aerospace and Science Applications International Corporation) Dates: September 3 through 6, 2002 Venue: Hyatt in Arlington , Virginia Background Rationale and Goals for the Workshop NOAO press release 03-03: NASA Should Lead More Focused Program to Reduce Threat from Hazardous Asteroids NOAO press release 02-08: Science Workshop Reveals Evolving Perspective on Asteroid Threat Download QuickTime animation of an asteroid hitting the earth. Courtesy Southwest Research Institute A series of still images of asteroid 2002 NY40, captured on August 15-16, two nights before its close flyby of Earth, has been turned into a QuickTime movie by the National Optical Astronomy Observatory in Tucson, AZ.

160. Novel Games - Free Flash Game: Asteroids Break the asteroids into small pieces until you destroy them. Beware of the UFO s also! Visit us at http//www.novelgames.com. http://www.novelgames.com/freeflashgames/asteroids/popup.php?siteid=99

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