What energy to travel in space?
What energy to travel in space?
Advanced propulsion systems
| System of propulsion | Specific impulse | |
|---|---|---|
| nuclear propulsion | Merger | 10,000-100,000 sec. |
| Antimatter | 60,000 sec. | |
| Electric drive | Electrothermal | s. |
| Electrostatic | 1200-10,000 sec. |
How can we move in space?
When an astronaut leaves the International Space Station ( ISS ) to go to thespaceit is said to be performing a spacewalk or, more simply, a spacewalk.space. These physically and psychologically demanding outings can sometimes last more than eight hours.
What is the speed of a satellite?
Speed in space. For a circular orbit 300 km above the Earth’s surface, for example, a speed of 7.8 km/s (28,000 km/h) is required. At this speed, the satellite completes a complete revolution around the Earth in 90 minutes. The satellites must move at this speed to compensate for the pull of the Earth.
What is the speed of a circular orbit 300 km above the surface of the Earth?
For a circular orbit 300 km above the Earth’s surface, for example, a speed of 7.8 km/s (28,000 km/h) is required. At this speed, the satellite completes a complete revolution around the Earth in 90 minutes. The satellites must move at this speed to compensate for the pull of the Earth.
What are the relativistic effects of ship velocity?
When the speed of the vessel exceeds a tenth of the speed of light the relativistic effects are felt: Approaching the speed of light the mass of the vessel increases. The passage of time aboard a ship moving relative to Earth is slower than that on Earth.
How can information travel at the speed of light?
If physical entities could be transmitted as information and reconstructed in place, traveling at exactly the speed of light would be possible. Note that according to general relativity, information cannot travel faster than light.
