Earth
Earth is the starting point for most people exploring space. It is where satellite visibility, observer location, orbital timing, and the Solar System map all become personal.
Object type
Rocky planet
Solar position
Third planet from the Sun
Natural moon
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TransitSatellite connection
Reference point for tracking
The story
The planet everything is measured from
Earth is the starting point for most people exploring space. Satellites, visible passes, launch paths, and deep-space missions are often described from the point of view of observers on Earth.
On TransitSatellite, Earth connects the live satellite tracker, the Solar System map, saved objects, and future education pages. It is the place users stand while looking outward.
Orbit explained
Earth moves while satellites move around it
Earth travels around the Sun while also rotating once each day. Satellites around Earth move in their own orbital paths, which is why timing and position matter so much for visibility predictions.
A satellite pass depends on where the satellite is, where the observer is, the shape of the orbit, and whether sunlight is hitting the spacecraft while the sky below is dark enough to see it.
Why it matters
Earth is the practical center of the user experience
For skywatchers, teachers, students, and satellite observers, Earth is the place where the data becomes personal. Location, time, visibility, and saved objects all connect back to Earth.
Why this belongs in the Library
Earth belongs in the Library because TransitSatellite begins with what people can see and track from the ground, then expands outward to the Moon, planets, and deep-space missions.
Open Earth in the Solar System map
View Earth in the live Solar System experience.
OpenOpen the satellite tracker
Track satellites from the Earth-based view.
OpenView saved planets
Open saved planets and mission pages.
OpenSources