Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Square Kilometre Array is a radio telescope in development which will have a total collecting area of approximately one square kilometre. It will operate over a wide range of frequencies and its size will make it 50 times more sensitive than any other radio instrument. The capabilities of the SKA will be designed to address a wide range of questions in astrophysics, fundamental physics, cosmology and particle astrophysics as well as extending the range of the observable universe. Learn more about dark matter, its properties and impact on cosmos in the following pages.