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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
What is the furthest satellite in space called?
The furthest man-made satellite from Earth is Voyager 1 - launched on the 5th of September 1977.
What are the different space satellites in the outer space?
there are many satellites in space.there are natural satellites and manmade satellites.For example,Earth"s natural satellite is the Moon.there are more than 3000 satellites in space!Some examples of their users are:weather forecast,communication from one place to another quickly.etc
This would be the definition of a "planet", which are technically "satellites" of the Sun.
Is satellite is between the moon and earth?
yes satellite is between moon and earth. moon can see a satellite only for ten hours in a day
Halley's Comet actually comes around every year. Humans enjoy loooking at the beautiful light show. The reason why Halley's Comet is so famous is that light show was the first comet seen that was reecorded.
How far apart are the Communications satellites?
Based on 2 degree separation, at this distance above the surface, about 22,300 miles, they are about 920 miles apart
What was the US plan for building a satellite missile shield in outer space?
The plan, which was promulgated during the presidency of Ronald Reagan, was called the Strategic Defense Initiative (SDI), but known by the nickname "Star Wars" because its goals were seen by many as overambitious. This was essentially a space-based extension of anti-missile systems designed to intercept ICBM's launched by an enemy against the US.
The plan was denounced by the Soviet Union because it seemed to violate the spirit of previous treaties to ban space-based weapons systems. In the US, the concept was viewed with skepticism because it required technologies far in advance of what existed at the time. In retrospect, SDI is often seen as a "bargaining chip" in limiting nuclear weapons, and as a major increase in military expenditures that the USSR could simply not afford to match.
What was the first satellite in orbit?
The first satellite in orbit was launched by the Russians on October 4, 1957. The satellite was Sputnik I, and it spurred the USA to launch their own satellite, Explorer I, on January 31, 1958.
Sputnik 1
Since the distance from the Earth's center is doubled, the force will be reduced by a factor of 4.
Are there any man made satellites in space visible from earth?
The International Space Station is visible from earth, if it passes over your location within a few hours of sunrise or sunset, and if you know exactly when and where to look. Now that its construction is nearing completion, there have been some reports of seeing the ISS in daylight. Check out "www.Heavens-Above.com" for the schedule of visible satellite passes, as well as tons of other astronomical stuff, all tailored to your specific location.
How many GPS satellites are there and when were they put in orbit?
The design of the satellites has remained essentially the same over the years; the differences have just been in their operations.
The first 11 satellites, known as Group I and designed by Rockwell International, were launched into orbit between 1978 and 1985 from Vandenburg Air Force Base in California. Each of these satellites contained one Cesium and two Rubidium atomic clocks and could provide navigation and standard positioning information. Continuous contact with the Ground Control Segment (CS) was required for their operation. They were designed to last five years, but most lasted much longer.
The next group of 9 satellites are called Group II and were also designed by Rockwell. These were the first to provide precision positioning information for military use and to be able to operate for 14 days without contact with the CS. Group II satellites contained four clocks two Cesium and two Rubidium and were launched between February 1989 and October 1990 from Cape Canaveral Air Force Station in Florida. They were designed to last 7.3 years and two currently remain in operation.
The Group IIA satellites were next group to be designed by Rockwell and numbered 19. They are similar to the Group II satellites, except they have the ability to operate 180 days without contact with CS. These were launched from Cape Canaveral between November 1990 and November 1997. All but three of these satellites are still in operation.
The most recent type, Group IIR, were designed by Lockheed Martin and each have three Rubidium clocks. They were designed to provide more accurate information through a combination of ranging techniques and communication between the satellites. They are also designed to last slightly longer (7.8 years) and to have improved independent controls. There are currently 12 such satellites in orbit the most recent launched in November 2004.
The satellites are launched via a Delta II rocket designed by Boeing. These are expendable launch vehicles (ELVs), meaning they are intended for one use only. Each of these ELVs consists of the following:
- Stage I which contains fuel and oxygen tanks to supply the main engine during its climb;
- Solid rocket booster motors to provide additional thrust during the first two minutes of flight;
- Stage II which contains the fuel and oxidizer tanks that supply the engine needed to insert the ELV into orbit and the brains of the ELV, including its guidance system;
- Stage III that has a solid rocket motor to provide any needed velocity change.
More input from others:
- According to SMC Fact Sheet (URL
http://www.losangeles.af.mil/smc/pa/fact_sheets/gps_fs.htm), as well as Garmin (URL http://www.garmin.com/aboutGPS/), there are 24 satellites in the system with an additional 4 on reserve.
What happens with satellite TV when there is a sun outage?
The Sun is the prime energy source for the planet earth. It burns and gives the planet light every day. The sun never goes out, but at certain times during the orbit of the satellite, the sun will affect how the satellite transmits. This is called a "sun outage" Sometimes, the sun will release large plasma masses called Coronal Mass Ejections, and these events may disrupt satellite TV. Satellite TV interference is common due to solar radiation, solar wind, and CMEs.
Are satellites likely to be on a map?
Sattelites are not likely to be on a map. The reason for this, is because some sattlites need to be kept under lock and key because of the things that they monitor.
When was echo satellite launched?
If memory serves - this was a lot of years ago - the Echo satellite(s) were launched in 1960.
They were enormous "beach balls" that inflated in space after launch, and the outer skin was a shiny Mylar-type material. They were mainly an experiment in communications - bouncing signals from one place to another, and they had a planned finite life before they descended and burned in the upper atmosphere. The great-grandfathers of today's communication satellites.
I will not swear to the year above, but I am almost certain it was 1960-61
