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Mind & Meaning
Prairie dogs don't just warn their colony that a predator is near. Their alarm calls seem to encode what kind of animal is coming, and in some experiments its colour, size, and how fast it moves — all from a rodent's squeak
A prairie dog standing sentry over its colony does more with a squeak than sound a generic alarm.
Mind & Meaning
The Strait of Hormuz is only 33 kilometres wide at its narrowest point, yet roughly a fifth of all the oil traded on Earth passes through that single channel every day, making it the most consequential strip of water on the planet
The Strait of Hormuz, the narrow sea passage linking the Persian Gulf to the Gulf of Oman and the open ocean, normally carries about 20 million barrels of oil a day.
What’s up in
Mind & Meaning
The psychology of ambition, isolation, and meaning under extremes — and what frontier life teaches us about being human.
Vera Rubin watched stars at the edges of galaxies moving far faster than visible matter could explain and found one of the clearest early signs that most of the universe is made of something we cannot see
We tend to assume Earth is a rare cosmic fluke, but a full analysis of NASA's Kepler data found at least 300 million rocky, habitable-zone planets around Sun-like stars in the Milky Way alone — and that is the conservative count
China’s Tianwen-2 spacecraft chased Earth’s tiny quasi-moon for 400 days and 1 billion kilometres — but just as it returned the first close-up image, new evidence challenged the leading theory that Kamoʻoalewa is a fragment blasted from the Moon
The James Webb Space Telescope found tiny “little red dots” that looked like impossibly compact galaxies — but astronomers now suspect many may be “black hole stars,” young black holes wrapped in gas so dense that the material falling into them produces a star-like glow
What’s up in
Science
Physics, climate, planetary science, and the research that shapes how we understand the universe.
Crows remember individual human faces, hold grudges, and warn other birds about dangerous people — University of Washington researchers found they were still scolding a threatening mask years after the original encounter
The gut and brain are in constant two-way communication — and scientists now see many cases of chronic constipation as a disorder of that signalling, not simply a problem of digestion
Everything we know about the Earth's core comes from earthquakes: seismic waves slow, bend, and vanish as they cross the boundaries below us, and in 1936 a Danish scientist named Inge Lehmann read those shadows to reveal a hidden inner core nested at the planet's center
In 2023, seismologists at the Australian National University, reading the echoes of earthquakes ringing back and forth through the whole planet, confirmed Earth hides an innermost core inside its inner core, a distinct iron ball roughly 1,300 kilometres across whose crystals line up along a different axis than the shell around it
About Space Daily
Space, science, and the human side of the frontier. Since 1995.
Space Daily is an independent publication covering three connected beats: the space industry, the science behind it, and the psychology of ambition, isolation, and meaning under extremes. Founded in Tokyo in 1995, we’ve built a thirty-year archive of rigorous reporting on the people, missions, and ideas pushing humanity outward — and on the human dynamics shaped by frontier life. The same ambitions, pressures, and patterns of mind that drive humanity to the stars also shape how we live on Earth. We employ modern AI technologies to support our editorial workflows; every published piece is editorially directed and reviewed.
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