Aster › Space program › HD 189733 b
HD 189733 b
Position on the route: 108/130 · level needed 1300 · journey (Mk0 engine) 357.6 h
By the numbers
| Distance | ≈ 64.5 light-years |
|---|---|
| Year | 2.2 days |
| Temperature | ≈ 1,000 °C |
| Wind | ≈ 8,700 km/h |
The story
HD 189733 b is a hot Jupiter and the star of exoplanet science’s first ‘weather’ studies. Spitzer made the first exoplanet temperature map in 2007; Hubble measured its colour in 2013: a deep blue, not from oceans but from silicate (glass) droplets in the atmosphere. It was the first time an exoplanet’s colour was measured.
Winds reach about 8,700 km/h and the glass droplets fall sideways: ‘sideways glass rain’. Water vapour, carbon dioxide and methane were detected in the atmosphere.
Missions
- Spitzer, Hubble and JWST observations
- Ground: ESPRESSO velocity measurements
Colony note
A gas giant: no surface. An orbital station only, with a Mk3 shield.
☠ A hot gas giant with sideways glass rain: no surface to land on. Only an orbital station.
What probes bring back
- Hubble (2013) measured its colour: a deep blue, from silicate droplets. The first exoplanet whose colour was measured.
- Spitzer made the first exoplanet weather map (2007); winds reach about 8,700 km/h and the glass rain blows sideways.