Outer space has been transformed from a realm of scientific endeavor to the US military's newest battlefield. From anti-satellite missiles to laser technology, discover the cutting-edge race to build the ultimate space weapon. 

One of NASA's most ambitious missions, OSIRIS-REx, is investigating the asteroid Bennu in more detail than ever before, revealing how space rocks can kick-start life on other planets and how they could possibly hold answers to the secrets of the Solar System. 

Astronomers are finally unlocking the mysteries to the alien underworlds of Uranus and Neptune, and experts reveal how an ancient mega-collision and a missing twin planet could uncover the secrets of these strange and frozen worlds. 

Astronauts have detected a mysterious region of space, the South Atlantic Anomaly (SAA), that's dangerous for reasons they have yet to understand, and scientists believe the long-term effects of this danger zone may have implications for the future of humanity both in space and on Earth. 

Einstein predicted strange cosmic phenomena known as white holes, but scientists have yet to prove they exist; as experts investigate the tiny black holes that hide in the most ancient parts of the universe, they might finally find the smoking gun. 

Astronomers make an extraordinary discovery when they uncover a cosmic mega-structure, the BOSS Great Wall, that's one billion light-years long, and now investigators race to decode the hidden forces that shape the most massive and mysterious structure known in the Universe. 

Astronomers are laying the groundwork to locate a new planet for the human race to inhabit, and the more alien worlds they discover and encounter, the more they unmask the mysterious and truly destructive nature of the cosmos.