Gravity and Orbital Motion

the point in an orbit farthest from the Sun.

a human-made object placed into orbit.

a natural object in space, such as a planet, moon, star, or asteroid.

a force directed toward the centre of a circular or curved path.

an orbit with approximately constant distance from the central object.

a space mission carrying humans.

an oval-shaped closed curve with two foci.

the minimum initial speed required to escape a body's gravitational influence without further propulsion.

one of two special points used to define an ellipse.

an orbit in which a satellite appears stationary above one point on Earth's equator.