Skip to content
Neptune billboard on the Solar System Drive

The windy ice giant

Neptune

Neptune was the first planet found by mathematics rather than a telescope. It still holds the solar system’s strongest winds — supersonic.

All worlds
Type
Ice giant
Distance
30.1 AU
Diameter
49,244 km
Orbit
165 Earth years
Moons
16, including Triton
Model size
1.3 m
On the Drive
118 km from the Sun
Found
1846 — predicted by Adams & Le Verrier, observed by Galle

Missions

Voyager 2 flyby 1989 — Great Dark Spot, winds near 2,400 km/h, Triton orbiting backwards.

Country around the board

Gunnedah is home of the Red Chief (Gambu Ganuurru), a Kamilaroi warrior-leader of the late 1700s. His story of strategy, defence and law is told in Ion Idriess’s classic. Warriors used the stars for night guidance in battle and hunt.

Where to look

Search Google Maps for the planet plus the road or town. Boards are large, dark blue, and sit on the five approach roads — then Timor Road and Observatory Road for the inner worlds.

No service just now. This board is on your phone. Open in Maps when you next have signal.