Here’s a quick-look summary of what we can expect from our space-based missions during the transit:
Venus Express: solar occultation experiment – using the Sun’s light to analyse Venus’ atmosphere, an important technique for exoplanet studies.
Proba-2: Watching for the dip in solar brightness as soon as Venus’ thick atmosphere makes contact with the Sun’s disc.
Hinode: visible, X-ray and UV observations to study the black drop effect and aureole.
SOHO: views of Venus as it approaches and leaves the Sun.
Hubble: using the Moon to collect diffuse reflected sunlight, which will contain a tiny portion of the light that passed through Venus’ atmosphere.
For a more in-depth review, see our news story ESA missions gear up for the transit of Venus, published on the space science web portal yesterday.