Claims that aliens are already here are everywhere, but proving them is another matter. The strongest cases become more ...

Does a star have to be alive – that is, shining from within, burning thermonuclear fuel at its core – in order to sustain life? Scientists assumed that white dwarfs – the dense remnants of dead stars ...

Recent research has uncovered a surprising twist in the search for extraterrestrial life: cosmic rays, typically seen as hazardous to life, may actually support alien life on cold, dark moons in our ...