It is believed to be one of the main forces shaping the universe but what do we actually know about this phenomenon we cannot actually see. This show will look at the studies currently under way that look for evidence of dark energy in the movement of galaxies.
Since humans have been able to look up at night, they've tried to make sense of the shape of stars in the sky. Early attempts created constellations, shapes created by star patterns, revealing the gods travelling across the heavens.
A look at how cosmic rays are produced and what that can tell us about the universe. Not simply another form of light, they carry information about powerful and unseen processes at work thousands or even millions of light years away.
A look at gigantic telescopes of the future with multiple mirrors working in unison. The Spitzer Space Telescope will see further than the Hubble and possibly get our first pictures ever of another planet that can support life as we know it.
Examining the short supply of water in the rest of the solar system, at least in liquid form. The search for water (and life) has revealed some unusual places, including a moon of Saturn that is shooting liquid water into space.