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The interstellar comet 3I/ATLAS, discovered over Chile in July 2025, may be more than 7.6 billion years old — roughly 3 billion years older than our solar system — and its speed and trajectory suggest it came from the Milky Way’s ancient thick-disk population, making it a possible relic of a planetary system that formed billions of years before ours

A visitor from the galaxy's dawn may have just arrived, carrying secrets about planetary systems that formed when the universe was young.

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Earth

Alligators in Florida's Everglades dig depressions through muck and peat, often down to the limestone bed, during the dry season, and the water-filled holes they maintain concentrate fish, turtles and wading birds so densely that ecologists count them as critical dry-season refuges across the southern marsh

During the Everglades' dry season, American alligators excavate and maintain water-filled depressions in the limestone that concentrate fish, turtles and wading birds — a piece of animal-built infrastructure that ecologists increasingly treat as central to how the southern marsh works.

Constellations

SN 1987A exploded 160,000 light-years away in the Large Magellanic Cloud and was first spotted from Earth in February 1987; nearly four decades later, the James Webb Space Telescope has finally caught evidence of high-energy emission from what appears to be the neutron star left at its core

Nearly four decades after SN 1987A lit up southern skies from the Large Magellanic Cloud, the James Webb Space Telescope has caught the first strong signature of the neutron star buried in its debris — argon and sulphur ionised by a hidden high-energy source at the centre of the remnant.

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Conflict, strategy, and defense technology.

SpaceWar is an independent publication covering military space, nuclear strategy, great-power competition, defense technology, and the security forces shaping modern conflict. The site pairs a deep archive with current reporting on the governments, companies, policy shifts, and technical breakthroughs shaping defense, deterrence, and global security. We employ modern AI technologies to support our editorial workflows; every published piece is editorially directed and reviewed.

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