The Invisible Pull

You have never touched the ground. Not really. The electrons on the bottom of your feet and the electrons on the surface of the earth push against each other — they repel, they refuse to meet — and the sensation you call standing is actually two invisible forces locked in a permanent standoff. But there is another force underneath that, quieter and stranger, that has no such refusal in it. It reaches across any distance, through any material, through the vacuum between galaxies, and it touches everything it has ever been near. It touched you when you were born and it has never let go. It does not require contact. It does not require a medium. It does not require anything at all. Newton called it gravity and admitted he had no idea what it actually was. He could write down what it did — he could predict where the Moon would be a thousand years from now — but the mechanism, the how, the thing doing the reaching: he confessed he had not the faintest idea. 'I feign no hypotheses,' he wrote, which is the most honest sentence in the history of physics. Something is pulling you toward the centre of the Earth right now, and for three hundred years the best minds alive agreed it was real, measurable, and completely unexplained.