Physics
Dark stars may be waiting in a mirror universe for us to discover them
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Bio
Jonathan O'Callaghan is a freelance science journalist based in London, UK. He specialises in stories on astronomy, astrophysics, and space exploration, and was recently awarded the Walter Sullivan Award for Excellence in Science Journalism by the American Geophysical Union.
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Physics
The wonder particle: How axions could solve more than just dark matter
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Space
We could make roads on the moon by melting lunar dust
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Space
Two giant planets collided and vaporised in a distant star system
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Space
Amazon is launching its first internet satellites to rival Starlink
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Space
Dark stars: Have we finally found a weird sun powered by dark matter?
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Space
Asteroid hit by NASA spacecraft is behaving unexpectedly
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Space
Massive crater found on distant world far beyond Neptune
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Space
Our solar system might be 1.1 million years older than we thought
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Space
NASA probably discovered quakes on Mars in the 1970s
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Space
Distant comet cracks into two halves after being heated by the sun
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Space
Fast-growing galaxy seen by JWST offers window on the early universe
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