Choose a background or upload your own photo, then download a shareable quote image.
Choose a background or upload your own photo, then download a shareable quote image.
The math is dead simple: it seems that the frequency of planets able to support life is roughly one percent. In other words, a billion or more such worlds exist in our galaxy alone. That's a lot of acreage, and it takes industrial-strength credulity to believe it's all bleakly barren.