Jupiter, Saturn, Uranus, and Neptune

Voyager 1 and 2 expedition profile.

Voyager transformed knowledge of giant planets, rings, moons, magnetospheres, and active geology across the outer solar system.

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Mission facts

Launch, target, and status

Target
Jupiter, Saturn, Uranus, and Neptune
Agency
NASA / JPL
Launch
August 20 and September 5, 1977
Arrival / encounter
Planetary flybys 1979 to 1989
Mission type
Gravity-assist flyby tour
Current status
Successful outer-planet tour; interstellar extension ongoing
Launch vehicle
Titan IIIE-Centaur
Reference target orbit
30.07 AU from Sun

Expedition path

How the spacecraft travelled

A rare outer-planet alignment enabled gravity assists from Jupiter outward.

Found volcanism at Io, complex rings, Titan atmosphere context, Uranus and Neptune system details, and many new moons.

Science Payload

What this mission measured

Measurements

Imaging, plasma, magnetic fields, charged particles, ultraviolet, infrared, photopolarimetry, radio science, and plasma waves.

Target environment

The target reference is 30.07 AU in the compact simulator; solar-probe entries use close-solar perihelion distance while planet entries use the target world's solar orbit.

Review note

The canvas shows a clean teaching transfer and mission class. Exact flight dynamics require full ephemerides, maneuvers, launch energy, spacecraft mass properties, and operations timelines.

Expedition review

Why Voyager 1 and 2 matters

Found volcanism at Io, complex rings, Titan atmosphere context, Uranus and Neptune system details, and many new moons.

Mathematical model

Mission trajectory and spacecraft model

Mission visuals combine catalog dates, distance vectors, speed estimates, and schematic spacecraft geometry. They are not CAD-certified vehicle meshes unless a source model is explicitly loaded.

Vector propagation

\[\mathbf{r}(t)=\mathbf{r}_0+\mathbf{v}(t-t_0)\]

For live-distance spacecraft pages, current position is propagated from epoch vector and velocity when high-precision ephemerides are not bundled.

Transfer curve

\[\mathbf{r}_{\mathrm{curve}}(u)=\operatorname{Bezier}\!\left(\mathbf{r}_{\mathrm{launch}},\mathbf{r}_{\mathrm{mid}},\mathbf{r}_{\mathrm{target}}\right)\]

Mission path arcs are schematic transfer curves anchored at meaningful endpoints, not claims of exact reconstructed trajectories.

Dimensional hierarchy

\[T_{\mathrm{world}}=T_{\mathrm{parent}}RS\]

Spacecraft parts are placed with transformation matrices. This proves the generated geometry is internally consistent even when simplified.

Verification standard: the rendered object must be reproducible from stated equations, catalog parameters, or explicit geometric transforms. Visual reference images may inform presentation only; they are not the source of orbital positions, field vectors, accretion-disk gradients, timing, or engineering layout.

Limitations: browser scenes may use bounded scale, compressed distances, simplified two-body dynamics, schematic transfer curves, or educational approximations where full numerical ephemerides, CFD, finite-element models, or general-relativistic ray tracing are outside the page scope. Those simplifications are part of the model contract, not hidden image-based construction.

Open the full site-wide mathematical verification policy