Tag Archives: Black drop

ESA’s missions gear up for the transit of Venus

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 … Continue reading

Posted in Transit of Venus | Tagged , , , | Comments Off on ESA’s missions gear up for the transit of Venus

Measuring the size of the Solar System – the ‘black drop’ problem

By guest blogger Peter Bond Despite the best efforts by astronomers who voyaged to far flung reaches of the Earth to watch the transits, the results of the observations was not as conclusive or accurate as had been hoped. The … Continue reading

Posted in Transit of Venus | Tagged , , | Comments Off on Measuring the size of the Solar System – the ‘black drop’ problem

Transit Terminology

Astronomers use different terms to describe the four main phases of a transit: Ingress, exterior (or first contact): the point at which Venus’ disc is just touching the outer edge of the Sun. Shortly after, the planet appears to make … Continue reading

Posted in Transit of Venus | Tagged , , | Comments Off on Transit Terminology