When someone tries to explain the concept of planet transits, you often see simulated graphics like the one below:
Well James Gilbert from the University of Oxford took the video of the transit of Venus he captured in 2012 (which was a real example of the transit technique in our backyard) and made the simulation into a reality. He measured the Sun’s brightness throughout the duration of the transit video, and the result is the below:
That’s no simulation! It’s truly amazing. You can find out more about how James made the video and took the footage at his blog: LabJG: James Gilbert.