Nounsatellites
From Wiktionary under the GNU Free Documentation License. In the context of spaceflight, a satellite is an object which has been placed into orbit by human endeavor. Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as the Moon. The first artificial satellite, Sputnik 1, was launched by the Soviet Union in 1957. By 2010 thousands of satellites had been launched into orbit around the Earth. These originate from more than 50 countries and have used the satellite launching capabilities of ten nations. A few hundred satellites are currently operational, whereas thousands of unused satellites and satellite fragments orbit the Earth as space debris. A few space probes have been placed into orbit around other bodies and become artificial satellites to the Moon, Venus, Mars, Jupiter and Saturn. Satellites are used for a large number of purposes. Common types include military (spy) and civilian Earth observation satellites, communication satellites, navigation satellites, weather satellites, and research satellites. Space stations and human spacecraft in orbit are also satellites. Satellite orbits vary greatly, depending on the purpose of the satellite, and are classified in a number of ways. Well-known (overlapping) classes include low Earth orbit, polar orbit, and geostationary orbit. Satellites are usually semi-independent computer controlled systems. Satellite subsystems attend many tasks, such as power generation, thermal control, telemetry, attitude control and orbit control. From Wikipedia under the
GNU Free Documentation License How do scientists keep track of the satellites? Q. How do scientists keep track of the satellites? How do scientists make sure the satellites are not lost in space? Asked by a v - Fri Jun 29 01:19:45 2007 - - 2 Answers - 0 Comments A. It takes just a small number of parameters (Keplerian elements) to allow an orbit to be predicted accurately quite far into the future. Tracking measurements are made occasionally to see if any errors have accumulated, and the elements are adjusted accordingly. Yes, serious effort goes into knowing where they all are. Answered by Frank N - Fri Jun 29 02:07:05 2007 How you would demonstrate the basics of satellites and/or gps systems? Q. I need to make a model or hands on demonstration that I could use to demonstrate the basics of satellites and gps positioning systems. I've learned the fundamentals of the positioning system, and the system of satellites, but I'm struggling to think of an effective way to present it. Thanks Asked by Rick S - Thu Oct 9 13:54:55 2008 - - 1 Answers - 0 Comments A. Put out a large area shallow pan. Mark three separated spots on the bottom of the pan to indicate the location of your satellites. Ideally, each satellite spot would be located on one of the points of an isoceles triangle. Mark a fourth spot among the three satellite spots as your target spot, the place locating the position you want to fix via your simulated GPS. Fill the pan with water so as to cover its entire area with, say, 1 inch of water. Put a device to sit on the bottom of the pan where the target spot is marked so that the device sticks out of the water. Stick a finger in the water over the first "satellite" spot to create a ripple. The ripples represent the GPS signals from that satellite. Time the time t1 it takes… [cont.] Answered by oldprof - Thu Oct 9 15:17:05 2008 Will satellites or telescopes be able to watch the navy missile strike the spy satellite?
Q. I wonder if earth based telescopes or orbiting satellites such as Hubble will be able to observe the navy's attempt to shoot down the disabled U.S. spy satellite. That would very interesting to see footage of. Asked by dmg1969 - Fri Feb 15 07:59:58 2008 - - 4 Answers - 0 Comments A. Hubble will not be able to watch the attack upon the crippled spy satellite, but the U.S military has had telescopes for decades that can observe satellites and other objects in space. Moreover, there has been programs to develop anti-ballistic missiles and live tests have been conducted over the Pacific ocean. Telescopes have been able to follow both the interceptor and the target vehicle until they collided and destroyed each other. If they shoot the satellite down while over territory where a space surveillance telescope can observe the attack, we will probably see footage on the evening news. Successful destruction of this crippled spy satellite would demonstrate not only to the American public but to potential adversaries as well that… [cont.] Answered by nuscorpii223 - Fri Feb 15 08:22:27 2008 From Yahoo Answer Search: "satellites"  news.google.com Space.com NASA and space agencies around the world are pointing their satellites toward Haiti to aid relief efforts and map damage caused by the ... NASA tasks satellites for Haiti earthquake study; Marshall Space Flight Center ... al.com (blog) An image of Haiti from the Shuttle Radar Topography Mission in 2000 Orlando Sentinel (blog) NASA satellites image Haiti areas hardest hits by the earthquake MercoPress all 8 news articles » news.google.com El Paso Inc In the final weeks of the year, American intelligence officials, using spy satellites and communication intercepts, were intently focused on pinpointing the ... and more » news.google.com CNNMoney.com (press release) To learn more about DigitalGlobe's advanced constellation of sub-meter satellites , please visit www.digitalglobe.com. ... and more » From Google News Search: "satellites"  w3.mersea.eu.org 699px x 1098px | 224.40kB [source page] Earth Observation Satellites since the 1990 s From Yahoo Image Search: "satellites"  cable.co.uk unknown Fri, 19 Feb 2010 12:03:14 GM Satellites. could play a key role in providing high-speed broadband across the UK, it has been suggested.  techcrunch.com Erick Schonfeld Mon, 10 Aug 2009 15:28:26 GM A decade ago, only a handful of people would have had access to such . satellite. imagery. Today, anyone can download it for free. CIA and military . satellites. are still higher resolution, but it makes you wonder how fast the ...  polijamblog.polijam.com PoliJAM Fri, 12 Feb 2010 08:46:16 GM Iranian Thug Regime Buses In Loyalists, Jams . Satellites. , Photoshops Media, Beats Opposition for Anniversary. By PoliJAM | February 12, 2010. BBC News reports 'Iran criticised over jamming ': Three major international broadcasters ... From Google Blog Search: "satellites" |
