A new spacecraft developed by the Chinese Academy of Sciences is expected to launch in the coming hours. China's 1,400kg Dark Matter Particle Explorer will scan the cosmos for elements, it is hoped, will give us a better understanding of the mysterious and unseen "dark matter". Tarek Bazley, Al Jazeera's science editor, explains. Subscribe to our channel http://bit.ly/AJSubscribe Follow us on Twitter / ajenglish Find us on Facebook / aljazeera Check our website: http://www.aljazeera.com/