Universal energy doesn’t have a single agreed-upon definition. The phrase sits at the intersection of two very different conversations: one rooted in physics, where energy is a measurable property woven into every particle and field in the cosmos, and one rooted in spiritual traditions, where it describes an invisible life force flowing through all living things. Both uses are widespread, and understanding what each one actually claims will help you sort through the information you’ll encounter.
Energy in Physics: What the Universe Is Made Of
In modern physics, energy isn’t a mysterious substance. It’s a quantifiable property of matter and fields, and it follows strict rules. The most fundamental of those rules is the first law of thermodynamics, also called the conservation of energy: within any closed system, energy is neither created nor destroyed. It can change form, moving from potential energy to kinetic energy to heat, but the total amount stays fixed. NASA’s Glenn Research Center describes this as one of the foundational concepts in all of physics, alongside the conservation of mass and momentum.
Einstein’s equation E = mc² revealed something even deeper. Mass and energy are interchangeable. A tiny amount of matter contains an enormous amount of energy (because c², the speed of light squared, is a staggeringly large number). This means that everything with mass, every atom in your body, every rock, every star, is itself a form of stored energy. The principle works in reverse too: enough concentrated energy can produce matter. This interchangeability is not theoretical. It’s confirmed every time particles collide in an accelerator and new particles appear from the collision’s energy.
Fields, Particles, and the Fabric of Reality
Quantum field theory, the framework behind the Standard Model of particle physics, takes this idea further. At the most fundamental level, the universe isn’t built from tiny solid balls of matter. It’s built from fields: the electromagnetic field, the electron field, the quark field, and roughly twenty others. What we call “elementary particles” like photons, electrons, and quarks are actually bundles of energy and momentum within these fields. A photon, for example, is a localized ripple in the electromagnetic field. In the words of physicists working within this framework, “the fundamental equations deal not with particles and fields, but with fields of force alone; particles are just bundles of field energy.”
So in a real, measurable sense, energy permeates the entire universe. Every point in space contains overlapping quantum fields, and even “empty” space has a baseline energy level. This is called zero-point energy, the residual energy that quantum fields retain even at their lowest possible state. It’s not zero. Vacuum fluctuations, tiny temporary shifts in these fields, occur constantly throughout all of space.
Dark Energy and the Expanding Universe
There’s an even larger-scale form of energy that physicists are still working to understand. Observations over the past few decades have shown that the universe’s expansion is accelerating, not slowing down as gravity alone would predict. Something is driving galaxies apart faster and faster. Physicists call this something “dark energy,” and it makes up roughly 70 percent of the total mass-energy content of the universe.
For the first few billion years after the Big Bang, gravity dominated, pulling matter together and forming galaxies and galaxy clusters. But somewhere between 3 and 7 billion years after the Big Bang, dark energy’s influence overtook gravity, and the expansion began speeding up. It hasn’t slowed since. As Harvard researcher Daniel Eisenstein has noted, none of the four known fundamental forces (gravity, electromagnetism, the strong force, the weak force) can explain this acceleration. Dark energy remains one of the biggest open questions in all of science.
The Spiritual Meaning: Life Force Traditions
When people search for “universal energy,” they’re often thinking of something quite different from physics. Many spiritual and healing traditions describe an invisible energy that flows through all living things, connecting them to each other and to the cosmos. This concept appears across cultures under different names: prana in Hindu philosophy, qi (or chi) in Chinese medicine, ki in Japanese traditions. Despite the different labels, they describe roughly the same idea: a vital force that animates living beings and distinguishes the living from the dead.
These ideas have very old roots. Aristotle proposed that a force called the psyche organizes the form and purposeful activity of living organisms. The Roman physician Galen, writing in the second century, described pneuma as the essential principle of life, an idea that persisted through the Middle Ages and into the Enlightenment. In the early 1800s, the Swedish chemist Jöns Jacob Berzelius argued that organic compounds required a mysterious vital force to be produced, distinguishing living chemistry from nonliving chemistry. That specific claim was disproven in 1828, when Friedrich Wöhler synthesized urea, an organic compound, from purely inorganic ingredients in a lab.
The philosophical version of vitalism had a longer life. In 1907, the French philosopher Henri Bergson coined the term “élan vital,” a vital impetus or creative force he believed was necessary to explain the complexity and innovation seen in biological evolution. Around the same time, the French physiologist Claude Bernard argued that living organisms couldn’t be understood as the sum of their parts. He championed the concept of homeostasis, the body’s ability to maintain internal balance, as the foundational principle of life. Bernard’s work ultimately helped move the conversation away from metaphysical vital forces and toward measurable biological processes.
Energy Healing Practices Today
The idea of a universal life force didn’t disappear with vitalism’s decline in mainstream science. It lives on in several healing modalities. Reiki, developed in Japan in the early twentieth century, is based on the premise that a practitioner can channel universal energy through their hands to promote healing. Therapeutic Touch and Healing Touch, which emerged in the nursing field in the late 1980s, make similar claims about manipulating a person’s “biofield” to reduce pain, anxiety, and stress.
The evidence for these practices is mixed. A systematic review of randomized clinical trials on Healing Touch found that patients often reported decreased anxiety and pain, along with increased relaxation and a general sense of well-being. However, the review’s purpose was to critically evaluate whether these outcomes hold up under rigorous testing, and the results were not strong enough to establish Healing Touch as clinically effective for any specific medical condition. A large survey involving 31,000 participants, referenced by the National Center for Complementary and Integrative Health, found that 55 percent of respondents reported improvements in overall health through complementary approaches including biofield therapies, though self-reported improvement in surveys doesn’t establish that the energy mechanism claimed by these therapies is real.
The core issue is that no instrument has ever detected, measured, or quantified the life force energy described in these traditions. Physics can measure electromagnetic fields, gravitational fields, and quantum fields with extraordinary precision. The “biofield” or “universal energy” described in healing practices doesn’t correspond to any of these measurable fields. That doesn’t necessarily mean the practices have zero benefit: relaxation, focused attention from a caregiver, and the placebo response are all real physiological phenomena that can reduce pain and stress. But the explanation for why they might help doesn’t require a universal energy field.
Where Physics and Spirituality Overlap, and Where They Don’t
It’s tempting to connect the two meanings. Quantum field theory tells us that energy truly does permeate every point in the universe. Conservation of energy tells us it’s never lost, only transformed. E = mc² tells us that matter itself is energy in a different form. These are genuine, verified facts about reality, and they sound a lot like the spiritual claim that everything is connected through energy.
The difference is precision. When physics says “energy,” it means a specific quantity that can be measured in joules, converted between well-defined forms, and predicted with equations. When spiritual traditions say “energy,” they mean something experienced subjectively: a sense of vitality, connection, or flow. The first can be tested and falsified. The second is a framework for personal experience and meaning-making. Both can be valuable in their own domains, but treating them as the same thing leads to confusion. A quantum field is not the same as qi, even though both involve the word “energy.”
If you’re drawn to the physics side, the takeaway is genuinely awe-inspiring on its own terms: every atom in your body was forged in a star, matter and energy are two expressions of the same thing, and 70 percent of the universe is made of something we can detect but can’t yet explain. If you’re drawn to the spiritual side, the traditions of prana and qi offer frameworks for thinking about health and vitality that billions of people across thousands of years have found meaningful, even if they don’t map onto measurable physics.