We are not alone. The biological basis for the existence of partners elsewhere in the universe, who share at least the possibility of life forms like ours, does exist elsewhere. This fact is of enormous importance. The Mars discoveries do not, of course, tell us about intelligent life.
Life is a basic element in the development of the universe.
We have not been certain that life is also an integral feature of evolution beyond our own planet. Knowledgeable scientists have argued both sides of this question. It is now not intellectually possible to question that life occurs elsewhere. The force of this bare facticity should not be overlooked as a major consequence of the Mars discoveries. However, on the other hand, this ordinariness carries with it a relativizing impact.