This a NASA photo of the planet Venus (which is only slightly smaller than the Earth) as it passes over the sun. If you didn’t see it today then you have to wait another 105 years for your next chance.
The sun is much much further away than Venus, just shows how small the planets are in comparison with the sun.
There was a big party in London yesterday because someone had completed 60 years doing the same job. This person lives at Buckingham Palace which is the house at the end of the street under all the fireworks.