In terms of physical location, we exist on planet Earth, which is part of the solar system, located in the Milky Way galaxy. The Milky Way is just one of billions of galaxies in the observable universe.

To provide a sense of scale, the Milky Way is a spiral-shaped galaxy with a diameter of about 100,000 light-years and contains billions of stars, as well as other celestial objects like planets, asteroids, and comets. Our solar system, including the Sun, eight planets (including Earth), and numerous other objects, resides within the Milky Way.

The Milky Way itself is part of a larger cosmic structure called the Local Group, which consists of about 54 galaxies, including the Andromeda Galaxy, and several smaller satellite galaxies. Beyond the Local Group, there are other galaxy clusters and superclusters that make up the larger-scale structure of the universe.

It is important to note that our understanding of the universe is continually evolving, and scientists are still exploring its vastness and intricacies. The universe is believed to be significantly larger than what we can observe, and there are ongoing efforts to study and comprehend its origins, composition, and overall structure.

In summary, we exist on Earth, which is located within the Milky Way galaxy, part of the Local Group, which itself is a part of the larger-scale structure of the universe.