October 14, 2019

Everything You Know About Space is Wrong

“Many of the great advances in science are marked by the discovery that an aspect of nature we thought was fundamental is actually an illusion, due to the coarseness of our sensory perceptions. Thus, air and water appear to us to be continuous fluids, but we discover on deeper experiment that they are made of atoms. The Earth appears to us motionless, but a deeper understanding teaches us that it moves relative to the sun and the galaxy.

One persistent illusion is that physical objects only interact with other objects they are close to. This is called the principle of locality. We can express this more precisely by the law that the strengths of forces between any two objects falls off quickly—at least by some power of the distance between them. This can be explained by positing that the bodies do not interact directly, but only through the mediation of a field, such as an electromagnetic field, which propagates from one body to the other. Fields spread out as they propagate, with the field lines covering a constantly greater area—providing a natural explanation for the laws that say the forces between charges and masses fall off like the square of the distance between them.

Locality is an aspect of an even more compelling illusion: that we exist within an absolute space, with respect to which we mark our positions as we move “through” it. Thus, Newton opined that motion is ultimately defined as change of position with respect to absolute space. If this seems obscure—because no measurement can establish a relation of a physical object to this imagined absolute space—Newton assured us that absolute space is seen by God, making your location relative to it an aspect of the divinity of the world. We humans must make do with relative positions and motions—which are defined relative to physical objects we can see.”

Read more

JJ Editor's Picks

"Kurds have been staunch allies in America's struggle against ISIS. Without them, America would have paid a far steeper price in blood and treasure to defeat the brutal outfit. That's why President Trump's move to pull U.S. troops out of..."

"For the first time since President Richard Nixon refused to turn over the White House tapes, the United States is facing a genuine constitutional crisis. To be sure, Donald Trump had already created a crisis in the presidency by abusing the..."

"Every October for the past five years, Fat Bear Week has showcased some of the healthiest, hungriest, and chonkiest bears in Katmai National Park and Preserve, a four-million-acre expanse of wilderness in southern Alaska..."

"I sat on my childhood bed, surrounded by 52-year-old stuffed animals, with a smartphone lodged between my ear and shoulder. My father had died unexpectedly the day before, and I was jotting down notes as my rabbi back in Ohio described various..."

"In August, it was SoulCycle and Equinox. The month prior, Home Depot. Back in 2017, L.L.Bean. These are only a few of the companies to ignite the collective ire of progressive consumers over corporate ties to Trump. In the case of the boutique..."

"Movies like Gemini Man are usually ideal airplane viewing. Take a formulaic plot about spies and cloning, then add dialogue so predictable that getting interrupted by pilots’ announcements and turbulence and your seatmate’s need to get up and..."

"It’s still unclear whether Israel’s next election will be in four years or four months. But either way, if the center-right wants a better outcome, it needs to learn the lessons of September’s election. So here are two: First, while center-right..."

"Smart homes, bountiful oceans and casual sexism: the future as envisaged from 1967 ‘Yes, life will be richer, easier, healthier as space-age dreams come true.’ In 1967, the Ford Motor Company (then known as Philco-Ford) released the short film..."