Contrary to the statement "there is no gravity in space," it is more accurate to say that there is gravity in space. Gravity is a fundamental force of nature that exists everywhere in the universe, including in space.
The misconception that there is no gravity in space may stem from the fact that objects in space, such as astronauts and satellites, appear to be weightless. This is due to the phenomenon of freefall. When an object is in freefall, it is essentially falling under the influence of gravity alone, without any other forces counteracting it. In this state, the object and any objects within it experience apparent weightlessness.
In space, where there is no air resistance or solid surface to support objects, astronauts and satellites are in a continuous state of freefall around larger celestial bodies, such as the Earth or the Sun. They are essentially in orbit, continuously falling toward the gravitational center of the larger body but also moving forward with enough speed to maintain a stable orbit. This creates the sensation of weightlessness for the objects and individuals within the spacecraft.
However, even in this state of apparent weightlessness, gravity is still present and plays a crucial role in determining the motion of objects in space. It is responsible for holding celestial bodies in their orbits, shaping the structure of galaxies, and influencing the behavior of matter on cosmic scales.
In summary, while objects in space may appear to be weightless due to freefall and the absence of a supporting surface, gravity is indeed present and is a fundamental force that governs the behavior of celestial bodies and objects in space.