The fragile, quivering mass of Earth is not in such concentrated focus as it was when those images from space first came to us. Cosmic scenes that captivate and circulate online are high-definition, high-quality images of very, very far away, usually made available directly from NASA. On Twitter, you could follow the last moments of the great content creator Cassini, which sent back pics from its journey to the outer limits and then was thrown onto the surface of Saturn. One of my favorite accounts sends out close-up images of Martian textures, @BitsofMars. But on other accounts, in other stories, we see half the earth burning, another part drowning. When we avert our gaze to outer space, it is all color-corrected wonder, blissfully bereft of context or history.