SOLAR SYSTEM

Detailed explanation-1: -Escape velocity is the speed at which an object must travel to break free of a planet or moon’s gravitational force and enter orbit.

Detailed explanation-2: -Orbital velocity is the velocity needed to achieve balance between gravity’s pull on the satellite and the inertia of the satellite’s motion–the satellite’s tendency to keep going. This is approximately 17, 000 mph (27, 359 kph) at an altitude of 150 miles (242 kilometers).

Detailed explanation-3: -Orbital velocity is made possible by the curved surface of a planet, star, or other celestial body. An orbiting object tends to move in a straight line, whereas the body it is orbiting curves.

Detailed explanation-4: -This really depends on what you mean by “into space.” If you just want to get into orbit around the Earth, you need to reach speeds of at least 4.9 miles per second, or about 17, 600 miles per hour.

Detailed explanation-5: -To maintain a circular orbit just above Earth’s atmosphere, a spacecraft must move at about 8 kilometers (5 miles) per second. Increasing the spacecraft’s launch velocity will make it swing farther from Earth. Increasing it to 11 kilometers (7 miles) per second will make the spacecraft escape from the Earth altogether.