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Minute Physics
One of Albert Einstein’s greatest accomplishments is his theory of general relativity, which relates mass, energy, and gravity. While revolutionizing physics, the equations introduced a conundrum—either the universe must be evolving, or an arbitrary constant must be added to account for a static universe. Einstein chose the latter path, only to later call his “cosmological constant” the biggest mistake of his career.
Science Time
One of the most counterintuitive aspects of quantum mechanics is that it describes the world as a set of probabilistic outcomes. Among other philosophical questions is whether the nature of quantum fluctuations may give rise to the science fiction-like possibility of multiple universes. Listen to physicist Neil deGrasse Tyson explore the concept of the multiverse in this ten-minute video.
The James Webb Space Telescope was launched December 25, 2021, with tools allowing it to peer billions of years back in time. The successor space telescope to NASA's highly touted Hubble, the Webb's infrared imaging capability is 100 times superior to Hubble's, enabling it to capture more objects at a further distance. This visual explainer its unprecedented equipment and traces its peculiar solar orbit 1 million miles from Earth.
The life of the universe is incomprehensibly long to the human mind. Scientists estimate the universe is 13.8 billion years old, the solar system 4.5 billion years old, modern humans have been around for about 200,000 years, and most of us live less than a century. This model built in the vastness of the Mojave Desert attempts to visually capture the age of the universe compared to our daily lives.
Quanta Magazine
Many major mysteries about the universe still confound scientists, from how the smallest building blocks behave to what makes up dark matter. A never-before-seen particle known as the axion may provide answers to the questions, but its existence to date is entirely hypothetical. Read about axions and how they may solve one of the biggest puzzles—why the universe is filled with matter, and not antimatter.
Quanta Magazine
It may sound like science fiction, but a number of theoretical physicists have argued our universe is shaped like a bubble, expanding into higher dimensional space. In an extra twist, surrounding our modest blob may be an infinite number of other universes, bubbling up in their own right. Untestable but fun to think about—what happens when and if these were to collide?
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