Maybe "belief" is the wrong criterion. Maybe "evidence" would be a better way to decide the issue. Small bits of evidence, that might eventually lead to concret

Maybe "belief" is the wrong criterion. Maybe "evidence" would be a better way to decide the issue. Small bits of evidence, that might eventually lead to concrete science, are accumulating, for example in our exploration of Mars we see various signs that Mars could have supported life long ago -- signs of past liquid water, certain minerals that are favorable to life. Things like that. Feel free to believe or not believe, but I prefer reality. I prefer direct evidence.