The discovery of tiny ripples in space from the violent collision of dense stars could help solve many mysteries – including where the gold in our jewellery comes from.
NASA’s Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star, including three in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water.
The perilous Juno mission could help reveal how Jupiter formed, whether it has a rocky core and even whether it influenced life on Earth.
Salty streaks have been discovered on Mars, which could be a sign that salt water seeps to the surface in…
A US Navy satellite has exploded while in orbit above the Earth after suffering a “catastrophic event”.