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Can A Satellite Send A Signal To Shut Down Your Engine When Targeted

How did the the Internet get started?

Did a lot of people get together and put this all into what it is today or did just one very very smart man think of of this, one day when it was raining out and. This may sound funny but it all had to start from some place!
















was there a lot of people or was there just one man that did all of this,no matter who did it . it had to be HArd!!

Do probes / shuttles need velocity to re-enter Earth's atmosphere?

I'm by no means an engineer / aerospace encyclopedia, as you can tell, but I thought there was a particular amount of "orbital force" or something which prevented objects in space from being dragged down into the atmosphere. Essentially, I'm talking about the polar opposite of escape velocity - is there a velocity required to re-enter a planet's atmosphere without being caught in its upper orbital fields?

Sorry if this makes no sense, lol.

What would stop a terrorist organization from using the US funded Global Positioning System for cruise or ballistic missile guidance?

Nothing would stop them from using it,A lot of country countries can jam missiles and prevent them from getting to the right spot with GPS denial systems.US military tests massive GPS jamming weapon over CaliforniaAir Force upgrades to better field reference system for testing GPS denialBy the way, a cruise missile uses four different systems to getit to its target:IGS - Inertial Guidance System - (over water, sensors and gyroscopes are used to measure acceleration and changes in direction. Once the missile crosses the shoreline, a more precise guidance method, TERCOM, takes over.Tercom - Terrain Contour Matching - TERCOM scans the landscape at set checkpoints, taking altitude readings and comparing them to map data in its computer memory. The missile moves at about 550 miles per hour, and can make twists and turns like a radar-evading fighter plane all the while skimming over the land at 100 feet to 300 feet.GPS - Tee one most of us are familiar withDSMAC - Digital Scene Matching Area Correlation - When the missiles closes in on its target, this 4th guidance system takes over: DSMAC snaps a picture of the target area and compares that data to a version in its memory. The computer then gives the wings and tail fins a final adjustment and takes the warhead to its target. Even if it’s moving …

Is it possible to hack or intercept communication signals to and from satellites?

The hackers took control of the Landsat-7 and Terra AM-1 satellites for a grand total of 12 minutes and two minutes respectively, the report claimed.But as satellite communications enthusiast Paul Marsh explained at the London Security B-Sides event in April, there are reasons to doubt the reports. He spoke about a similar story, reported in the late 1990s, about hackers supposedly accessing UK military satellite communications network SkyNet and ‘nudging’ one satellite out of synch.“First off,” he explained, “jamming a satellite is easy to trace. Every time a command is sent up to the satellite, it gets counted. If you send one wrong frame up to then a red light will start flashing at RAF Oakingham.”Marsh presented some back- of-the-envelope calculations for the power that would be needed to launch a “brute force” attack on a Skynet satellite.He used Google Earth to estimate that the dish that controls Skynet satellites from RAF Oakingham is about seven meters in diameter, meaning the transmitted power is about five million watts.“That’s a lot,” said Marsh. In fact, it is about as much power as is produced by a train. A typical wind turbine has an output of just one to the three million watts.Marsch said he doubted whether hackers would have had the wherewithal to send tracking and telemetry data up to the Skynet satellite. Whether Chinese hackers have that capability now is just one more matter of speculation to add to the opaque field of cyber warfare.

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