When the Galileo spacecraft swooped by Jupiter's frozen moon Europa in Nov. 1997, views of its blistered surface strengthened suspicions that a briny ocean harboring life could lie beneath an icy crust.
An image of Europa released by the Jet Propulsion Laboratory in Pasadena, Calif., in 1996 by the Galileo spacecraft. NASA says a new probe dedicated to studying the Jovian moon, is going into the development phase.
We think that life came from non-life, from the increasing complexity of chemical reactions between biomolecules present on the primordial Earth. But what about the universe? How did it come to be if there was nothing before?