What is the point on the surface of the Earth that is directly below the satellite called?

Explanation: The satellite location is specified by a point on the surface of the earth directly below the satellite. This point is known as the subsatellite point (SSP). The subsatellite point is then located by using conventional latitude and longitude designations.

Why are the orbits of satellites outside of the Earth’s atmosphere?

Even when satellites are thousands of miles away, Earth’s gravity still tugs on them. Gravity—combined with the satellite’s momentum from its launch into space—cause the satellite to go into orbit above Earth, instead of falling back down to the ground.

How fast can we travel in space with current technology?

450,000 mph
The fastest ever spacecraft, the now- in-space Parker Solar Probe will reach a top speed of 450,000 mph. It would take just 20 seconds to go from Los Angeles to New York City at that speed, but it would take the solar probe about 6,633 years to reach Earth’s nearest neighboring solar system.

How many times does a satellite orbit the Earth in a day?

Satellites in this orbit travel at a speed of around 7.8 km per second; at this speed, a satellite takes approximately 90 minutes to circle Earth, meaning the ISS travels around Earth about 16 times a day.

What is the J2 effect?

The term J2 comes from an infinite series mathematical equation that describes the perturbational effects of oblation on the gravity of a planet. The two main orbital elements affected by J2 Perturbations are the Right Ascension of the Ascending Node (Ω) and the Argument of Perigee (ω).

Why FM is used in satellite communication?

In the case of FM, Bandwith is large and noise immunity is high that’s why it is used in satellite communication. whereas in AM B.W is 2 fm, in DSB-SC BW is 2 fm, SSB-SC BW is fm. So we can see the B.W of FM is large, as compared to other schemes.

Which gas makes up most of Earth’s atmosphere?

nitrogen
Earth’s atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent.

Is it possible to reach the speed of light?

We can never reach the speed of light. Or, more accurately, we can never reach the speed of light in a vacuum. That is, the ultimate cosmic speed limit, of 299,792,458 m/s is unattainable for massive particles, and simultaneously is the speed that all massless particles must travel at.