Travel from Earth to the Moon, the Solar System, the Milky Way, the Local Group, the cosmic web, and the observable universe, connecting 20 orders of distance and the light-travel time behind each step across ten discoveries.
You are not the center of the whole universe. And yet the universe you can see right now always spreads out centered on this place. Keeping Earth in place, open the surrounding context one step at a time.
Earth’s reference values are based on NASA Earth .
Drag Earth around to its far side and confirm that the place you observe the universe from is "here."
The center of the observable range and the center of the whole universe are different concepts.
The distance layout is kept in both. Reading scale enlarges only the target’s diameter; true ratio shows it becoming a point or gap as it really is.
Earth’s shape, radius, and atmosphere are based on geodetic observation.
