This image shows the famous Venus transit from last year. The image, taken in ultraviolet, shows the Sun's colorful brilliance with the little dark spot being the planet Venus. This event is officially known as a "Venusian annular eclipse," and this broad spectrum event is known as a planetary transit.
This image is a composite of three ultraviolet images taken by NASA's Solar Dynamics Observatory (SDO) currently in orbit around Earth. The very large, dark purple, "dark spot" is a coronal hole – which is simply an area on the sun that's less dense allowing the magnetic field to be more free. Venusian transits happen every 110 years on average and is followed by a second transit eight years after the first. The next Venusian transit will happen in 2117 (so, there is a chance some of your youngest children will live to see it – barring any advances in medicine that allow humans to live much longer than they do today).
Set your alarms.