Rock samples show Mars was capable of sustaining life as we know it. Also; scientists discover third closest stellar system to the sun; and more certainty, but less magic, about the 'Higgs' particle.
New evidence the Milky Way galaxy is cannibalising a smaller dwarf galaxy. Also; is a comet about to crash into Mars? And how comets could have seeded Earth with the precursors for life.
Monster flows from the Milky Way could hold a clue to solving the mystery of dark matter. Also; scientists spot the birth of a new planet; and two comets streak across southern skies.
Signs of Saturn's birthplace raises new questions about planetary migration theory. Also; smallest planet yet detected, and Higgs boson calculations predict the end of the universe.
Over a 1000 people injured and millions in damage as a meteor airbursts over Russia. Also; could an asteroid impact site in outback Australia be linked to the late Devonian mass extinction event? And discovery of a source of cosmic rays.
Get ready for an asteroid half the size of a football field to skim past Earth. Also; asteroid collision and dinosaur extinction much closer than previously thought; and have scientists discovered the last warnings signs of a supernova?
Time to rewrite the text books on planetary evolution. Also; new CSIRO observations support Big Bang theory, and South Korea launches its first rocket into space.
Astronomers discover why the Sun's atmosphere is hotter than its surface. Also; biggest asteroid ever detected about to fly close to Earth. And new theory explores origins of mysterious red-glowing objects in deep space.
Scientists discover a sting of quasars over four billion light-years long. Also; forget Star Wars special effects, what would you really see if you travelled faster than the speed of light? And bushfires damage Siding Spring Observatory.