how are satellites kept in orbit around the earth?
404666
By the pull of earth's gravity
1096009
At this point, the question is not what moves the sun or the earth, but what if anything is stopping it.\n\nThey were set in motion long ago. (nobody knows precisely how and why but most of the astronomy theories have to do with motion and energies imparted in a big bang or the like)\n\nOnce in motion, an object will stay in motion until something stops it.  So, nothing is moving the earth now, it is just still moving.  It will continue rotating and orbiting and winging along through space until something interferes.
1022705
The sun keeps the planets in an unwavering orbit, which keeps the hunks of rock from spilling out into the universe. As time goes on, the sun expands, but not even noticeably for millions of years, which will in time envelop the planets around it, and implode into a white dwarf (dead star).
88905
The moon is in orbit around the earth. duh! but to answer your question you have to think that as the moon orbits it is orbiting the center of the planet. The earth turns also but it is quite unaffected by the moon, the two have nothing to do with each other. As you might know the earth is tilted some 23 degress from it's orbit around the sun. This tilting gives us our seasons. During winter the earth is tilted away from the sun and because of this sun sits low in the sky ( northern lattitudes of course). In the summer it is the opposite. Anyway the moon also has a tilt to it compared to earth's tilt. As it goes around and round we see it in different parts of it's seasons. Of course the moon takes only 28 days to go through it's year so not much is happening, but it explains why the moon seems to move. One more thing the moon rises in the east. Perhaps you meant the moon seems to rise more north or south- it does both
36637
By giving them enough speed, depending on the altitude of orbit (the heightof elevation of an object above sea level). The higher the altitude of orbit, the higher amount of speed needed.\n\nIf satellite loses orbital speed, especially if the orbit is low, gravity steps in and the spacecraft soon plunges to Earth.
1076161
An object orbiting another in space can be considered to be in freefall around the center object.  You have probably heard someone explaining circular motion like that of an astronaut or space station or the moon as being in freefall towards the earth.  It's a balancing act between the gravity between the two objects (causing the free fall) and the inertia of the planets, moons, satelites, etc that keep them moving in a direction perpinduclar to the inward falling direction.  \n\nEventualy the orbiting object will have to fall toward the center object or away from it, debending on whether the inertia or the gravity is stronger.  \n\nOur moon is moving away from us.\n\nAll the stars in the galaxy are moving around the center of the galaxy and all the galaxies are moving around the center of the universe but we will never fall in because not only is the universe still expanding, the rate at which all the galaxies are moving away from the center of the universe is getting faster.
277479
Do you mean satellites people made that are still up there? Because I think there is an answer to that question.\n\nBut natural satellites? Gazillions.
1145075
In order to send a satellite around the moon it would take a lot stronger rockets than currently used to bring them into orbit. Geostationary orbit is at a mere 36000km altitude, 1/11 of the distance to the moon. Satellites brought into geostationary don't have to overcome the escape velocity of earth.\n\nAny launch anomaly that could send a satellite around the moon has sufficient fuel and power left to send it into the wanted orbit.
971285
For a small satellite we normally consider the following parameters:\nattitude determination and control \npropulsion \nelectrical power supply \ntelemetry, tracking, and command \ncommand and data handling \nstructure, adapter \nthermal control \n added to all this is cost of satellite and cost of launching. Usually such a small satellite stay in orbit between 6 and 18 months.
338602
There are a number of observations that prove Earth moves around the Sun. Astronomers have found that relatively nearby stars appear to move horizontally back and forth slightly over a year's time. This effect is due to a phenomenon called parallax which in turn results from Earth's movement around the Sun. Also Earth's measured movement through the cosmic microwave background radiation is consistent with our orbit around the Sun.\n\nThis website has a more complete discussion about proofs of Earth's orbit around the Sun --\n\nhttp://curious.astro.cornell.edu/question.php?number=190
272130
When the moon is full, it is on the side of the Earth opposite the sun. It takes the moon about a month to go around the Earth once. So in the course of a single day, it remains in almost the same position.
1098292
if a rocket were to "stop"  in space  it would come tumblin down like a rock. a rockets orbit is what keeps it up there.  if you meant how does it dock or move its by using stabilizer rockets
912790
Here are some of the questions you need to answer first. Is this a geosynchronous satellite (which means stationary with respect to our view from earth), or a low earth orbiting (LEO) satellite. LEO satellite goes around the earth, typically once every 90-100 minutes. Are the signals powerful enough to do it from your home satellite dish, like that of DirecTV. Do you know the frequency? Do you know where in space it is? There are web sites where you may be able to find the locations of these satellites. Do you have the right equipment, e.g. descrambling signals that may be scrambled. Trying to install a DishTV or DirecTV dish all by yourself is the best exercise to gain some experience in this.
743465
The Sun is orbiting the center of the Milky Way galaxy at something like 200,000 miles per hour. At the same time the Earth is orbiting the Sun at 66,000 miles per hour. At the same time the Moon is orbiting the Earth at about 2,100 miles per hour. And when the Apollo space craft were orbiting the Moon, they did so at about 3,800 miles per hour.\n\nThe reason Earth can orbit the moving Sun is that both the Earth and Sun share the motion of the Sun around the galaxy. It is kind of like playing catch in a moving car. The fact that the car is driving 65 MPH is no problem for you to throw the ball back and forth just like you would in a parked car.
433264
Objects orbit one another because they have a curved trajectory that results from the vector addition of their momentum (in the direction of travel, tangential to the orbit) and the gravitational attraction to the other object (normal to the orbit).\n\nThis vector is constantly changing in direction (but not to any significant degree in magnitude) because of the object's motion, but it always keeps the satellite's acceleration pointed towards the object is it orbiting, resulting in smooth, roughly circular motion.
849207
Your friend is half right.  What keeps the earth in orbit is the gravitational pull of the sun.  Why doesn't the earth crash into the sun?  Because the inertia of the earth (or any other object in an orbit) is always at a right angle to the centripital force.  \n\nCentripital force is literally the center seeking force.  It is always directed to the of the orbit.  The velocity or direction of motion is always at a 90degree angle to this force.  Since the direction of motion and acceleration are always changing, the object can be constantly accelerating and constantly in motion without ever getting any closer to the center.
7432
If we just look at the sun, earth, moon system, all three bodies orbit the center of mass of this 3-body system.  Since the sun is much more massive than the other two bodies, the location of the center of mass of this system is inside the sun, so the sun moves very little, while the earth and moon appear to orbit the sun.\n\nNow, the earth and the moon also interact gravitationally, and they orbit the center of mass of the earth moon system  The center of mass of this earth-moon system is located inside the earth, so the moon looks like it orbits the earth.  \n\nYou can view the earth and moon as being in orbit around their center of mass, and the earth-moon system center of mass being in orbit around the earth-sun-moon system.\n\nIf the sun, earth, moon had equivalent masses, and if there were no other gravity bodies in the universe, they would appear to have orbits around the center of mass of this smaller earth, moon, sun system.\n\nI think the term"orbit" can be a little confusing because it's not always clearly defined.  The gravitational attraction of the sun on the moon is greater than the earth's attraction on the moon, so you could also argue that the moon really orbits the sun, with it's orbit modified by the earth.