Independent Catholic journal · Free to read
Georges Lemaître used physics to describe an expanding universe.
His story opens a Catholic journal about discoveries, the people behind them, and the questions they raise for belief.
The journal
37 stories
Newest first
A 2025 study opens a careful look at blood tests, microbes and trace DNA — and at the difference between investigating an unusual appearance and interpreting its religious meaning.
A small moon in Saturn’s rings poses a good question: why does some material stay scattered while other material holds together? The Roche limit helps explain both the answer and its qualifications.
A feather’s shimmer begins with the way tiny structures handle light. Looking closely reveals a richer story about color, pigments, and the goodness of creatures.
Its telescopes grew from calendar making, international collaboration, and a Catholic conviction that the natural world is worth understanding.
The observations were transformative. The Church’s condemnation was real. Understanding both makes the lesson more demanding than a familiar slogan.
Mary Kenneth Keller helped make computing an educational opportunity. Her achievement becomes more interesting when we separate the record from the legends.
The opening pages of Scripture ask us to read carefully: the kind of truth a passage communicates depends partly on the kind of writing it is.
A medieval Dominican treated plants, minerals, and animals as subjects worth knowing. His example asks us to take both history and observation seriously.
A natural law describes the world with remarkable precision. Deciding whether an extraordinary event is a divine sign requires further kinds of judgment.
Angelo Secchi helped turn points of light into physical objects that could be compared. The patterns in their spectra opened a new kind of astronomy.
Following the universe backward leads to powerful evidence—and to a boundary our best theories have not yet crossed with confidence.
The answer comes from radioactive clocks, geological context, and evidence that can be checked against other evidence.
Four religious sisters helped transform photographic dots into a usable star catalogue. Their work reveals why measurement—and the people who do it—deserves a place in discovery.
Inside Bologna’s San Petronio, a small opening and a long line made the Sun measurable. The instrument reveals a complicated history of worship, patronage, and inquiry.
Julius Nieuwland’s acetylene research helped open a route to neoprene. The full story belongs to a network of chemists, and to the strange behavior of very large molecules.
Fossils and living animals make suffering difficult to dismiss. Catholic reflection must face that evidence without pretending to possess a complete explanation.
Population history, family ancestry, and original sin concern different things. Their connection is a serious question that neither a genetic nickname nor a quick harmonization resolves.
Making a building block, explaining an evolving population, and reconstructing Earth's first living systems are related achievements with different evidential demands.
A microbe, an atmospheric signal, and an intelligent civilization would raise different questions. The theological response should begin with the discovery actually made.
Some physical conditions matter profoundly for stars, chemistry, and life. Turning that observation into a probability or a theological conclusion takes additional arguments.
Brain imaging reveals extraordinary things about embodied thought. Its power depends on knowing what it measures—and what it does not.
A fluent answer is evidence of a capability. Deciding whether there is someone behind it requires a much more careful argument.
The atoms in a glass of water have different cosmic histories. Following them reveals both the truth and the limits of a familiar phrase.
A feast that changes date reveals the difficulty of fitting the Sun, Moon, and seven-day week onto one calendar.
Random events can have lawful patterns. Whether they belong to a providential world is a different—and demanding—question.
The passenger pigeon disappeared from a continent that once held billions. Its absence asks a question that counting useful animals cannot answer.
A green leaf connects light, air, water, and living growth. Understanding the connections makes an ordinary tree considerably stranger.
Quantum experiments overturn familiar expectations. They also impose much tighter limits than the slogans built around them suggest.
The strongest dating result, the serious objections, and the difference between a historical claim and an object of devotion.
Researchers can study defined health outcomes after an organized prayer intervention. Knowing what that comparison means is as important as knowing the result.
A network of Jesuit institutions helped turn distant ground motion into shared evidence. James Macelwane’s story connects careful instruments with a practical concern for people.
A swinging pendulum and a signal from colliding black holes expose the same puzzle: why should reasoning on paper reach so far into reality?
Agnesi made advanced mathematics easier to learn, then devoted much of her life to care. Both achievements deserve more than a story about a curious curve.
Georges Lemaître, a Catholic priest and physicist, helped reveal an expanding universe. Follow the discovery and the questions it opened.
A Jesuit researcher, a sample from asteroid Bennu, and a measurement that needed another look.
A reported healing at Lourdes: the medical assessment, the Church’s judgment, and the limits of the public record.
Discovery can deepen wonder. Examine the reasoning that connects scientific findings to Catholic belief.
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NEW · THE SAINTS ATLAS
Explore saints, blesseds, and Catholic candidates through their work, choices, and the people they served. Each profile also examines reports about their remains and the records behind them. Use the map to find a shrine.
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Follow a discovery, learn how a measurement works, then examine an argument about God.
For a longer reading path, explore Catholic Scientists or Miracles and Scientific Evidence.
Our sources. Our methods.Begin with a discovery · 4 min
See how Lemaître used general relativity and galaxy measurements to argue that the universe expands.
Step into the laboratory · 4 min
Find out how gas pressure can measure a rock’s volume, and why Bennu’s samples complicated the result.
Follow the larger question · 4 min
Examine an argument about why anything exists, including the objection that reality may need no further explanation.
Look again
Near-infrared light reveals many stars; mid-infrared light makes dust more prominent. Switch between Webb’s views of the Pillars of Creation and compare the stars and cloud edges.
NIRCam reveals a crowded field of stars and the edges of dense clouds.
These are different fields of view, not an aligned before-and-after comparison. Visible colors represent infrared wavelengths.
Explore science and belief
Wherever you begin
Explore what Catholics believe about Jesus Christ, prayer, and the sacraments. There are starting points for readers meeting the Church for the first time and for those finding their way back.
Find a place to beginThe Sunday Letter
The first letter follows Lemaître’s discovery and asks what learning about nature has changed for you. Read it now, or join the list for future letters.
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