spaceorbit.org v1.0 Orbital speed is the velocity required for an object to maintain a stable path around a central body. It results from the precise balance between gravitational pull and forward motion. In space, where there is almost no air resistance, the right speed allows…
Continue reading...spaceorbit.org v1.0 Most orbits in the universe are not perfect circles. They are ellipses — slightly oval-shaped curves. This simple geometric shape governs the motion of planets, comets, moons, and many other celestial bodies. Johannes Kepler discovered this truth in the early 1600s, showing that…
Continue reading...spaceorbit.org v1.0 Gravity is the universal force that pulls objects with mass toward each other. In orbital astronomy, this pull works together with forward motion to create stable paths. The delicate balance between gravitational attraction and inertia allows satellites, planets, moons, and stars to follow…
Continue reading...spaceorbit.org v1.0 Johannes Kepler discovered three elegant laws in the early 1600s that describe how planets and other objects move in their orbits around the Sun. Using precise observations from Tycho Brahe, Kepler replaced the old idea of perfect circular orbits with a more accurate…
Continue reading...spaceorbit.org v1.0 Orbits are the graceful curved paths that objects in space follow around a central body due to gravity. Without gravity, objects would travel in straight lines forever. Too little forward speed and they fall inward. The perfect balance between gravitational pull and forward…
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