Radiation itself does not have gravity. Gravity is a fundamental force of nature that arises due to the presence of mass or energy. It is responsible for the attraction between objects with mass and determines the structure of the universe on large scales.
Radiation, on the other hand, refers to the emission or transmission of energy in the form of electromagnetic waves or particles. Examples include light, radio waves, X-rays, and gamma rays. Radiation can be influenced by gravity, but it does not possess gravity itself.
Gravity affects the path of radiation by bending its trajectory as it passes through a gravitational field. This effect, known as gravitational lensing, occurs when light or other forms of radiation pass near massive objects like stars, galaxies, or black holes. The gravitational field of these objects warps the spacetime around them, causing the path of radiation to curve.
Gravitational lensing has been observed and studied extensively in astronomy. It can distort the images of distant objects, create multiple images of a single object, or even magnify distant sources of radiation. However, it is important to note that this is an effect of gravity acting on radiation, rather than radiation itself possessing gravity.