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New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Jonathan O鈥機allaghan

Contributor

Bio

is a freelance science journalist based in London. He specialises in stories on astronomy, astrophysics and space exploration, and was awarded the by the American Geophysical Union in 2021.

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More from Jonathan O鈥機allaghan

Explore the latest news, articles and features

New Chandra observations have been used to make the first detection of X-ray emission from young stars with masses similar to our Sun outside our Milky Way galaxy. The Chandra observations of these low-mass stars were made of the region known as the

Space

Rare intergalactic supernova may have been seen outside the Milky Way

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An artistic rendering of an early, large collision on Venus. New modeling results suggest that high-speed impacts such as this could have remelted Venus? mantle, altering its planetary evolution.

Space

Super-fast impacts may have made Venus an uninhabitable hellhole

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A hot planet transits in front of its parent star in this artist impression of an exoplanet system.

Space

An ultra-hot gas giant exoplanet orbits its star once every 16 hours

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Planet Earth and Sun. Elements of this image furnished by NASA.

Space

Mysterious origin of Earth's water may be explained by solar wind

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A map centred on location of the Planet 9 candidate

Space

Enigmatic Planet Nine may have been seen by telescope in the 1980s

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Artist's impression of `Oumuamua

Space

Earth may have grown around a rock from an alien star system

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Curiosity

Space

NASA's Curiosity Mars rover tests new way to search for alien life

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Venus

Space

Venus鈥檚 surface may have never been cool enough for oceans or life

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White dwarf

Space

Weird white dwarf that is colder than it should be defies explanation

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Lunar craters could reveal past collisions with ancient black holes

Space

Lunar craters could reveal past collisions with ancient black holes

Features

Enceladus

Space

Spacecraft could detect signs of life on Saturn's moon Enceladus

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Artist's illustration of an asteroid belt, with rocks against dark space lit from the side.

Space

Weird hybrid meteorite may be evidence of a chaotic early solar system

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