We can judge the value of any scientific endeavour based on how much of our knowledge it overturns or transforms.

The intrepid mapping mission has collected more than three trillion observations that'll change the way we see our neck of ...

Galaxies are not islands in the cosmos. While globally the universe expands—driven by the mysterious "dark energy"—locally, ...

The European Space Agency’s Gaia mission has almost completely depleted the cold gas propellant that kept it spinning and ...