While the Sun is indeed located about 93 million miles away from Earth, there are several celestial objects and phenomena that can cast shadows on Earth or block sunlight to some extent. Here are a few examples:
The Moon: As you mentioned, the Moon periodically blocks sunlight during solar eclipses. When the Moon aligns between the Sun and Earth, it can cast a shadow on a specific region of Earth, resulting in a partial or total solar eclipse.
Solar System Bodies: Planets and their moons can cast shadows as they pass in front of the Sun. For example, during a transit of Venus or Mercury, these planets move between Earth and the Sun, causing them to cast small shadows on Earth. Additionally, the moons of other planets can cast shadows on their host planets.
Satellites and Spacecraft: Artificial satellites and human-made spacecraft in Earth's orbit can also cast shadows on Earth's surface when they pass between the Sun and a particular location on Earth. While these shadows are relatively small and short-lived, they can still create localized areas of shade.
Atmospheric Phenomena: Atmospheric conditions can also block or scatter sunlight, resulting in areas of shadow or reduced sunlight intensity on Earth's surface. For example, clouds, fog, haze, and even pollution can partially block sunlight and create shadows on the ground.
It's important to note that the vast majority of sunlight reaches Earth unimpeded, as the distances between celestial objects in our solar system are enormous compared to their sizes. Therefore, objects such as other planets or asteroids would not typically cast noticeable shadows on Earth due to their relatively small size and distance from us.