August's full moon will be the closest supermoon of the year, when it comes within 356,896km (221,764 miles) of Earth on August 10, 2014.
The Perseid meteor shower, which takes place between 9 and 14 August, is one of the best showers of the year, with at least 100 meteors appearing every hour.
Nasa said the two cosmic shows will "face off" between 10 and 13 August, resulting in what should be a beautiful night sky.
A supermoon occurs when the full moon is closer to Earth in its normal orbit than normal, making it look brighter and larger than normal.
