Tag Archives: time

Twin mysteries: A ghostly fundamental particle and a physicist who disappeared after saying its antiparticle may not exist

Twin mysteries arose around 1937 when Italian theoretical physicist Ettore Majorana suggested neutrinos are their own antiparticles. Soon afterward he took the night ferry from Palermo to Napoli and vanished, leaving us to ask: What happened to him; and was he right? The Standard Model has a place for every known elementary particle. It says […]

Understanding time travel . . . and travel time

Albert Einstein predicted time travel in 1905. It was demonstrated in 1971 and many times since. The twin paradox provides a dramatic illustration of time travel: You travel to a distant star and return to find you are far into your twin’s future. No-one has done this; but it is a real effect. It has […]

Physics has long been confused about the concept of ‘now’. New insights show that it is fundamental.

A sense of Now is the universal human experience. Yet modern physics cannot handle the concept of the present moment. Indeed relativity—our great theory of space and time—insisted on embedding it within a time dimension and then crossbreeding this dimension with three space dimensions to make spacetime. This was a blunder. It blocks progress. Physics […]

Are we alone? Winston Churchill penned a scientific answer almost 80 years ago. New discoveries show he was right.

Is there life out there? has long been an issue. Recently the issue has been shifting to: How many planets harbour life? Winston Churchill (with whom I’m proud to share a publisher) was among the first to ask this question. In 1939—shortly before he became Prime Minister of Britain—he penned an unpublished work of careful […]

A mysterious new shape seems to say something fundamental about the nature of the universe. Can we understand its message?

Plato set out to explain everything with five perfect shapes. His theory died centuries ago. But in 2013 a shape called the amplituhedron burst upon the science scene. Physicists find it performs a miracle. But they don’t know how. The answer may hold a deep truth physics can sense but can’t quite find. Understanding the […]

What’s Wrong with Relativity?

There is no absolute frame of reference. It’s called the Principle of Relativity. Problem is: The principle is wrong. How so? Let’s take a closer look at what it is. Italian physicist Galileo Galilei had an idea. He said an experiment that’s done inside a smoothly moving ship can’t tell you that it’s moving. In […]