The diagram shows an exoplanet orbiting a distant star, as viewed from Earth. The exoplanet has a circular orbit around its host star, but because of the orientation of the star system relative to Earth, it appears flat. How many times, per orbit of the exoplanet, does the exoplanet make a transit across the star?
The diagram shows an exoplanet in four different positions, i, ii, iii, and iv, in a circular orbit around a distant star. A scientist on Earth measures the amount of light coming from the star. In which of the four positions shown will the exoplanet block some of the light coming from the star as measured by the scientist?
The graph shows the apparent magnitude of a star as an exoplanet that is in orbit around the star transits across it. What is the duration of the transit? Give your answer to the nearest day.