There is indeed light in space. In fact, space is filled with light from various sources. However, the perception that space appears dark is primarily due to a few reasons:
Lack of Atmosphere: In space, there is no atmosphere to scatter and disperse sunlight. On Earth, our atmosphere scatters sunlight in all directions, filling the sky with light even during the daytime. This scattering of light is what creates the blue color of the sky. In space, without an atmosphere, light travels in straight lines, and if there are no objects to reflect or scatter it, the path of light appears dark.
Contrast and Background Noise: In space, the absence of a significant background light source can make objects appear dark against the blackness of space. On Earth, we have a bright atmosphere, sunlight, and artificial lighting, which can make objects stand out more prominently.
Astronomical Phenomena: There are regions in space that contain vast amounts of gas, dust, and cosmic material that can block or absorb light. These regions are known as interstellar clouds or nebulae. When light encounters these dense regions, it can be absorbed or scattered, making those areas appear dark or opaque.
However, it's important to note that there are numerous sources of light in space. Stars, galaxies, nebulae, and other astronomical objects emit light across a wide range of wavelengths, including visible light. Additionally, space missions and telescopes have provided us with remarkable images of distant celestial objects, showcasing the beauty and diversity of light in the cosmos.