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Artificial Satellites
Artificial Satellites are objects launched from earth to orbit earth or other planets. Satellites are used for communication, remote sensing, weather forecasting, and other purposes. This category is for questions about satellites in general or specific satellites.
1,932 Questions
The first sputnik didn't actually crash but rather burned as it reentered the atmosphere in January of 1958. There were actually over 40 sputnik's released into space.
Why is geostationary important?
A geostationary satellite is an earth-orbiting satellite, placed at an altitude of approximately 35,800 kilometers (22,300 miles) directly over the equator, that revolves in the same direction the earth rotates (west to east). At this altitude, one orbit takes 24 hours, the same length of time as the earth requires to rotate once on its axis.
The term geostationary comes from the fact that such a satellite appears nearly stationary in the sky as seen by a ground-based observer.
In other words a satellite that orbits a specific part of the earth while the earth is rotating so it looks like the satellite doesn't move. For example if you put a satellite over over the geographic US it will stay over the US and turn with the earth around the axis without ever loosing site of the US.
How many satellites are there in space?
That depends on what you call a satellite. The correct use of the word simply means an object caught in earths orbit. If this is what you are looking for there are litterally tens of thousands of objects from small meteorites to lost tools and rocket stages floating in orbit. So much so that it is now becomming increasingly dangerous to put new vehicles in space as the debris orbits at around 17000 miles per hour.
If man made satellites for communications is what you are searching for then thats difficult to gauge. It's unlikely that most countries will admit to placing spy satellites in space to the true figure is difficult to say, but The Goddard Space Flight Center's lists 2,271 satellites currently in orbit.
Russia has the most satellites currently in orbit, with 1,324 satellites, followed by the U.S. with 658.
Who was president when to Soviet Union lonched there space shudle?
Man, do you need to use the Spell Check program!
I THINK you meant to ask "WHO WAS PRESIDENT WHEN THE SOVIET UNION LAUNCHED THEIR SPACE SHUTTLE?" As they don't have a space shuttle, we don't know who the president will be when they do have one.
Name of the satellites India have launched?
Improve
1.
Aryabhata
19.04.1975
First Indian satellite. Provided technological experience in building and operating a satellite system. Launched by Russian launch vehicle Intercosmos.
2.
Bhaskara-I
07.06.1979
First experimental remote sensing satellite. Carried TV and microwave cameras. Launched by Russian launch vehicle Intercosmos.
3.
Bhaskara-II
20.11.1981
Second experimental remote sensing satellite similar to Bhaskara-1. Provided experience in building and operating a remote sensing satellite system on an end-to-end basis. Launched by Russian launch vehicle Intercosmos.
4.
Ariane Passenger Payload Experiment (APPLE)
19.06.1981
First experimental communication satellite. Provided experience in building and operating a three-axis stabilised communication satellite. Launched by the European Ariane.
5.
Rohini Technology Payload (RTP)
10.08.1979
Intended for measuring in-flight performance of first experimental flight of SLV-3, the first Indian launch vehicle. Could not be placed in orbit.
6.
Rohini (RS-1)
18.07.1980
Used for measuring in-flight performance of second experimental launch of SLV-3.
7.
Rohini (RS-D1)
31.05.1981
Used for conducting some remote sensing technology studies using a landmark sensor payload. Launched by the first developmental launch of SLV-3
8.
Rohini (RS-D2)
17.04.1983
Identical to RS-D1. Launched by the second developmental launch of SLV-3.
9.
Stretched Rohini Satellite Series (SROSS-1)
24.03.1987
Carried payload for launch vehicle performance monitoring and for Gamma Ray astronomy. Could not be placed in orbit.
10.
Stretched Rohini Satellite Series (SROSS-2)
13.07.1988
Carried remote sensing payload of German space agency in addition to Gamma Ray astronomy payload. Could not be placed in orbit.
11.
Stretched Rohini Satellite Series (SROSS-C)
20.05.1992
Launched by third developmental flight of ASLV. Carried Gamma Ray astronomy and aeronomy payload.
12.
Stretched Rohini Satellite Series (SROSS-C2)
04.05.1994
Launched by fourth developmental flight of ASLV. Identical to SROSS-C. Still in service.
Indian National Satellite System (INSAT)
13.
INSAT-1A
10.04.1982
First operational multi-purpose communication and meteorology satellite procured from USA. Worked only for six months. Launched by US Delta launch vehicle.
14.
INSAT-1B
30.08.1983
Identical to INSAT-1A. Served for more than design life of seven years. Launched by US Space Shuttle.
15.
INSAT-1C
21.07.1988
Same as INSAT-1A. Served for only one and a half years. Launched by European Ariane launch vehicle.
16.
INSAT-1D
12.06.1990
Identical to INSAT-1A. Launched by US Delta launch vehicle. Still in service.
17.
INSAT-2A
10.07.1992
First satellite in the second-generation Indian-built INSAT-2 series. Has enhanced capability than INSAT-1 series. Launched by European Ariane launch vehicle. Still in service.
18.
INSAT-2B
23.07.1993
Second satellite in INSAT-2 series. Identical to INSAT-2A. Launched by European Ariane launch vehicle. Still in service.
19.
INSAT-2C
07.12.1995
Has additional capabilities such as mobile satellite service, business communication and television outreach beyond Indian boundaries. Launched by European launch vehicle. In service.
20.
INSAT-2D
04.06.1997
Same as INSAT-2C. Launched by European launch vehicle Ariane. Inoperable since Oct 4, 97 due to power bus anomaly.
21.
INSAT-2DT
January 1998
Procured in orbit from ARABSAT
22.
INSAT-2E
03.04.1999
Multipurpose communication & meteorological satellite launched by Ariane.
23.
INSAT-3B
22.03.2000
Multipurpose communication - business communication, developmental communication and mobile communication purpose.
24.
GSAT-1
18.04.2001
Experimental Satellite for the first developmental flight of Geo-synchronous Satellite Launch Vehicle, GSLV-D1.
25.
INSAT-3C
24.01.2002
To augment the existing INSAT capacity for communication and broadcasting, besides providing continuity of the services of INSAT-2C.
26.
KALPANA-1
12.09.2002
METSAT was the first exclusive meteorological satellite built by ISRO named after Kalpana Chawla.
27.
INSAT-3A
10.04.2003
Multipurpose Satellite for communication and broadcasting, besides providing meteorological services along with INSAT-2E and KALPANA-1.
28.
GSAT-2
08.05.2003
Experimental Satellite for the second developmental test flight of India's Geosynchronous Satellite Launch Vehicle, GSLV
29.
INSAT-3E
28.09.2003
Exclusive communication satellite to augment the existing INSAT System.
30.
EDUSAT
20.09.2004
India's first exclusive educational satellite.
31.
HAMSAT
05.05.2005
Microsatellite for providing satellite based Amateur Radio Services to the national as well as the international community (HAMs).
32.
INSAT-4A
22.12.2005
The most advanced satellite for Direct-to-Home television broadcasting services.
33.
INSAT-4C
10.07.2006
State-of-the-art communication satellite - could not be placed in orbit.
34.
INSAT-4B
12.03.2007
An identical satellite to INSAT-4A further augment the INSAT capacity for Direct-To-Home (DTH) television services and other communications.
35.
INSAT-4CR
02.09.2007
Designed to provide Direct-To-home (DTH) television services, Video Picture Transmission (VPT) and Digital Satellite News Gathering (DSNG), identical to INSAT- 4C .
Indian Remote Sensing Satellite (IRS)
36.
IRS-1A
17.03.1988
First operational remote sensing satellite. Launched by a Russian Vostok.
37.
IRS-1B
29.08.1991
Same as IRS-1A. Launched by a Russian Launch vehicle, Vostok. Still in service.
38.
IRS-1E
20.09.1993
Carried remote sensing payloads. Could not be placed in orbit.
39.
IRS-P2
15.10.1994
Carried remote sensing payload. Launched by second developmental flight of PSLV.
40.
IRS-1C
28.12.1995
Carries advanced remote sensing cameras. Launched by Russian Molniya launch vehicle. Still in service.
41.
IRS-P3
21.03.1996
Carries remote sensing payload and an X-ray astronomy payload. Launched by third developmental flight of PSLV. Still in service.
42.
IRS-1D
29.09.1997
Same as IRS-1C. Launched by India's PSLV service. In service.
43.
IRS-P4 Oceansat
26.05.1999
Carries an Ocean Colour Monitor (OCM) and a Multi-frequency Scanning Microwave Radiometer (MSMR), Launched by India's PSLV-C2,
44.
Technology Experiment Satellite (TES)
22.10.2001
Technology Experiment Satellite Launched by PSLV-C3 .
45.
IRS-P6 Resourcesat-1
17.10.2003
Launched by PSLV - C5, carries three camera, names, LISS-4, LISS-3 and AwiFS
46.
CARTOSAT -1
05.05.2005
Launched by PSLV-C6, carries two panchromatic cameras - PAN (fore) and PAN (aft) - with 2.5 meter resolution. The cam mounted with a tilt of +26 deg and -5 deg along the track to provide stereo images.
47.
CARTOSAT - 2
10.01.2007
Launched by PSLV-C7, it is an advanced remote sensing satellite carrying a panchromatic camera capable of providing scene specific spot imageries.
48.
SRE - 1
10.01.2007
Launched by PSLV-C7, Space capsule Recovery Experiment (SRE-1), intended to demonstrate the technology of an orbiting platform for performing experiments in microgravity conditions. SRE-1 was recovered successfully after 12 days over Bay of Bengal.
49.
CARTOSAT-2A
28.04.2008
Identical to CARTOSAT - 2, launched by PSLV-C9
50.
IMS-1
28.04.2008
Launched by PSLV-C9 along with CARTOSAT-2A and other Eight
What is the same between a satellite and a space probe?
A satellite and space probe both orbit Earth (sometimes in geosynchronous orbits).
When did explorer 1 first US satellite go in orbit?
Explorer 1 was in orbit for 111 days after launch on January 2 1958. I make that to be May 4, 1958.
Was the invention of the satellite based on other technology?
There's a nice we site that explains the background of space sattelites, particularily the first: Sputnik I. see this link: http://inventors.about.com/library/inventors/blsatellite.htm
How big is Telstar the satellite?
Satellites come in all sizes. Some satellites are built by amateur operators and can be very small, less than one cubic foot! And there's other satellites that are much larger. Modern communications satellites can weigh up to six tons and be the size of a small school bus.
Explain how a communications satellite is used?
http://library.thinkquest.org/03oct/02144/basics/satcomm.htm Satellite Communication Satellites have now become an integral part of the worldwide communication systems. Although long-range and long distance communication took place much before the introduction of satellite systems, they had a lot of disadvantages. Point - to - point communication systems are very difficult in the case of remote & isolated locations, which are surrounded by oceans, mountains and other obstacles created by nature. The satellite is nothing more than a radio-relay station But, they have one potential advantage- The capability of a direct line of sight path to 98% (excluding the polar caps, which are in accessible to satellites) of the earth's surface. One of the most important event in the history of satellite communication took place when COMSAT or communication satellite corporation, launched four satellites within 6 years that is between 1965 to 1979. The first of these series was the 'Early Bird' , which was launched in 1965. This was the first communication station to handle worldwide commercial telephone traffic from a fixed position in space. The next series INTELSAT was a group of satellites that served 150 stations in 80 countries. ..................................... get the points and write the essay urself
What is the approximately height of a geo-stationary satellite from the earth's surface?
Before you begin, you need to know that a geosynchronous orbit completes one orbit every day.
Step 1
F= N/T= 1/1 day= 1/86400 seconds
T= 1/F= 86400 seconds
Step 2
The formulas we will use are:
v= square root of (Gme/r)
v= 2(3.14...)r/T * This is derived from the formula v=d/t, since the satellite is circling a sphere (circumference/time it takes to complete one orbit)
We already know the following information:
G= 6.67x10-11 N*m2/kg2
rE= 6.38x106 m
me= 5.98x1024 kg
v= square root of (Gme/r)
2(3.14...)r/T= square root of (Gme/r)
(2(3.14...)r/T)2= Gme/r
4(3.14...)2r2/T2= Gme/r
* cross out an r from each side and rearrange the formula:
r3= GmeT2/4(3.14...)2
r= cubed root of (GmeT2/4(3.14...)2)
r= cubed root of (6.67x10-11*5.98x1024*864002)/4(3.14)2
r= 4.22x107 m
Step 3
r= rE+ height above earth's surface
4.22x107= 6.38x106+ height above earth's surface
Therefore, the altitude of the satellite's orbit above the earth's surface is 3.59x107 m
it ain't transmitting nothing it fell outa the sky 50 years ago
it ain't transmitting nothing it fell outa the sky 50 years ago
it ain't transmitting nothing it fell outa the sky 50 years ago
Why was satellite aryabhatta launched in space?
Aryabhata was India's first satellite, named after the great Indian astronomer of the same name. It was launched by the Soviet Union on 19 April 1975 from Kapustin Yar using a Cosmos-3M launch vehicle. Aryabhata was built by the Indian Space Research Organization (ISRO) to conduct experiments related to astronomy. The satellite reentered the Earth's atmosphere on 11 February 1992.
How do satellites see through clouds?
Using an imaging radar. Also known as Synthetic Aperture Radar (SAR).
What was sputnik why was it launched?
Not much really.
It's main purpose was to see if things could be launched into orbit and if they would remain functional up there.
How can you install Bose satellite speakers?
Connect the left and right speaker cables to the back of the Acoustimass Module. Connect the control pod to the back of the Acoustimass module. Connect the power cable to the back of the Acoustimass Module, and also to the electrical outlet on the wall. Press the I/O button on the back of the Acoustimass Module. Connect the audio cable either from the control pod or the acoustimass module, to a sound source. Tap the control pod, turn it up clockwise and play some music on your sound source, whether it is your computer, mp3 player, etc. You should refer to the Manual if you dont know how to do this. It is here: http://products.bose.com/pdf/customer_service/owners/og_companion3.pdf
Did the Russians began the sputnik space race yes or no?
The USSR launched the first artificial satellite, Sputnik 1, into orbit on the 4th of October, 1957.
Who did Sputnik 1 orbit first?
Sputnik I? The Russian (Soviet Union) satellite? Well, the Soviet Union had successfully launched this satellite, so the Russians were indeed involved. I am pretty sure that only the Soviet Union was involved (even though Sputnik I was part of the Space Race, the American people did not have anything to do with the satellite).
What countries were involved in the Magellan space satellite?
It was built by NASA (the US), with contributions from the European Space Agency (France, Germany, Italy, the UK, Spain, Belgium, the Netherlands, Switzerland, Sweden, Denmark, Ireland, Norway, and Austria at the time the Hubble was launched; since then six additional countries (and the European Union as a whole) have joined - in addition, Canada is an "associate member", and has been since the very early days of the ESA).
How does satellite remain stationary?
A geosynchronous satellite stays in what is called a geostationary orbit. This means that they stay in one place, or follow a certain pattern each day. This is done by radio waves and communication.
The planet Earth completes a complete revolution of the Sun (year) in 365.25 days, each of which is 24 hours or 86,400 seconds in duration. For its mean orbital circumference of 292 million miles (470 million km), the Earth travels at an average orbital speed of 66,622 mph (107, 218 km/hr or about 30 km/sec).
