Astronomy · Core Systems

Earth-Moon System

▶ Explore this system live in the app

An 'Earth-centric' microscope view of our immediate cosmic neighborhood. By establishing Earth as the primary gravitational anchor, we can visualize the precise scale of low Earth orbit and cislunar space.

This visualization highlights the density of human orbital infrastructure—from the ISS and Starlink swarms to the Geostationary belt—and the protective layers of the atmosphere, magnetosphere, and Van Allen radiation belts.

Celestial Bodies (22)

Earth Magnetosphere
region · orbits Earth · -70,000,000 km–600,000,000 km

The invisible magnetic field protecting Earth from solar radiation. The "magnetotail" is blown outward by the solar wind, stretching hundreds of thousands of kilometers past the orbit of the Moon.

Earth
star · system center · 12,742,000 km diameter

Our pale blue dot, acting as the primary gravitational anchor for this local space visualization. It is surrounded by a dense, fragile layer of atmosphere and human infrastructure.

Atmosphere
region · orbits Earth · 6,371,000 km–16,371,000 km
Troposphere
region · orbits Atmosphere · center of system–12,000 km

The lowest layer, containing 75% of the atmosphere's mass and almost all of its water vapor. It is the chaotic domain of Earth's weather.

Stratosphere
region · orbits Atmosphere · 12,000 km–50,000 km

Contains the ozone layer, which absorbs the bulk of the Sun's harmful ultraviolet radiation. Commercial jetliners cruise in its lower, stable reaches.

Mesosphere
region · orbits Atmosphere · 50,000 km–85,000 km

The coldest atmospheric layer, plunging to -90°C. This is where most meteors burn up upon entry, creating shooting stars.

Thermosphere
region · orbits Atmosphere · 85,000 km–600,000 km

Temperatures here can reach 2,000°C due to solar radiation, yet the gas is so incredibly thin it would feel freezing to human skin. The Aurora Borealis occurs here.

Tiangong Space Station
station · orbits Earth · 6,761,000 km · 55 km diameter

The modular space station constructed by the China Manned Space Agency, orbiting in the lower thermosphere.

International Space Station
station · orbits Earth · 6,791,000 km · 109 km diameter

The largest modular space station in low Earth orbit. It travels at 28,000 km/h, orbiting the Earth once every 90 minutes.

Starlink Constellation (VLEO)
region · orbits Earth · 6,901,000 km–6,941,000 km

A massive, highly dense mega-constellation of thousands of internet-providing satellites in Very Low Earth Orbit.

Hubble Space Telescope
spacecraft · orbits Earth · 6,906,000 km · 13 km diameter

Launched in 1990, this telescope has provided some of the most detailed and iconic images of the cosmos ever captured.

Exosphere
region · orbits Atmosphere · 600,000 km–10,000,000 km

The outermost layer of Earth's atmosphere, where particles are so sparsely distributed they can travel hundreds of kilometers without colliding. It slowly fades into the vacuum of space.

Inner Van Allen Belt
region · orbits Earth · 7,371,000 km–18,371,000 km

A dense torus of highly energetic protons trapped by Earth's magnetic field. Prolonged exposure here is lethal to both humans and unshielded electronics.

Outer Van Allen Belt
region · orbits Earth · 19,371,000 km–66,371,000 km

A much larger, highly fluctuating zone consisting mainly of high-energy electrons originating from the solar wind.

GPS / MEO Constellations
region · orbits Earth · 26,371,000 km–26,771,000 km

Medium Earth Orbit. Home to the navigation and positioning constellations like GPS, Galileo, and GLONASS.

Geostationary Belt
region · orbits Earth · 42,147,000 km–42,167,000 km

A highly specific ring where satellites match Earth's rotation, appearing to hover completely still in the sky.

Super-Synchronous Graveyard
region · orbits Earth · 42,471,000 km–42,571,000 km

A supersynchronous orbit where decommissioned satellites are intentionally moved to avoid colliding with active operational craft.

The Moon (Luna)
planet · orbits Earth · 384,400,000 km · 3,474,000 km diameter

Earth's only natural satellite. Despite appearing so close in the night sky, the true distance to the Moon is vast enough to fit every other planet in the solar system between us.

Lunar Gateway (Planned)
station · orbits The Moon (Luna) · 3,600,000 km · 40 km diameter

A mini space station in a near-rectilinear halo orbit around the Moon, serving as a communication hub and staging point for deep space.

Earth's Hill Sphere
region · orbits Earth · 1,450,000,000 km–1,500,000,000 km

The absolute boundary of Earth's gravitational dominance. Beyond this invisible spherical edge, the Sun's gravity becomes the primary force.

James Webb Space Telescope
spacecraft · orbits Earth · 1,500,000,000 km · 20 km diameter

Orbiting the Sun-Earth L2 Lagrange point, this massive infrared observatory is looking back to the very dawn of the universe.

Tesla Roadster
spacecraft · orbits Earth · 2,200,000,000 km · 4 km diameter

A midnight cherry Tesla Roadster launched into a heliocentric orbit in 2018.