How the Universe Works, Hunt for Alien Evidence

If an asteroid collides with the earth it could end life on our planet as we know it. Experts reveal just how close we are to an apocalypse.

Manned missions to Mars are the next frontier of human exploration and NASA wants to put boots on the Red Planet by 2035. But, is it mission impossible?

The discovery of extra-terrestrial life faces a near impossible challenge. Experts explore the problems with proving or disproving the existence of aliens.

The universe's stars are dying faster than new ones are born. Experts investigate the last stars of the cosmos and what a stellar apocalypse means for Earth.

The time travelling machines of Hollywood movies offer infinite opportunities, but could time travel ever really be more than science fiction?

NASA's Juno probe is unlocking Jupiter's secrets, answering mysteries and gathering data. Scientists, and experts explain the importance of this mission.

Some of the brightest minds and theorists on the planet explore the limits of human knowledge and explain the science behind the rules of the universe.

26,000 lightyears away at the heart of the galaxy lies a massive black hole. How can something so far away be studied, and what could it teach scientists?

Earth is spinning on a tilted axis as it orbits around the Sun. Experts and scientists explain how the planet journeys through the Milky Way.