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July 3, 2026, 04:48 PM - 7 min read
Most craters from the early Earth have vanished. At North Pole Dome, one survived. Its rocks preserve the trace of a space impact from 3.024 billion years ago – a rare page from the violent youth of our planet, with the date still written in the stone.
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June 28, 2026, 06:18 PM - 5 min read
Scanning the cosmos since its launch in 2004, Swift has been sinking faster and faster because of recent intense solar activity. It needs to get to a higher, more stable orbit as soon as possible to survive.
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June 24, 2026, 01:03 PM - 9 min read
Earth’s food would not necessarily be edible for them. Terrestrial protein might be of no use if their digestive systems used different amino acids. Our sugars might prove useless if their metabolism could not handle them. Our bacteria may devastate alien life – or perhaps not infect it at all.
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May 28, 2026, 12:40 PM - 9 min read
Given the scale of interstellar distances, it’s inevitable that any alien voyage to Earth would span many years and possibly several centuries. But as the time spent in transit increases, so does the risk of catastrophic accidents or system malfunctions that could jeopardise the mission.
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May 19, 2026, 01:01 PM - 7 min read
A surge in rocket launches is filling orbit with satellites built from tougher, more heat-resistant materials—and when they fall back to Earth, they aren't always burning up the way we expect.
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March 24, 2026, 06:28 PM - 9 min read
The human eye can see fewer than 4,500 stars in an unpolluted night sky. If SpaceX is permitted to launch these satellites, we will see more satellites than stars — for large portions of the night and the year, throughout the world. This will severely damage the night sky for everyone on Earth.
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March 15, 2026, 02:53 PM - 6 min read
Debris is already hitting the ground and the chanceof a casualty from mega constellation re-entries is now about 40 per cent perfive-year cycle – rising for both people and aircraft as more satellites areadded to orbit.
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February 11, 2026, 12:44 PM - 6 min read
The story of the Green River shows that processes deep within the Earth can have profound impacts for life on the surface.
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February 5, 2026, 01:20 PM - 6 min read
Planets larger than Earth but smaller than Neptune are the most common type of known exoplanet. It was for one of these planets, K2-18b, that a bold claim of a detection of a biosignature was made in 2025.
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January 26, 2026, 02:31 PM - 5 min read
A new study demonstrates the stones did not arrive through natural ice movement.
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January 22, 2026, 02:40 PM - 5 min read
Historically, it has been thought these volcanic arcs were the primary culprits of injecting carbon dioxide into the atmosphere. The new findings challenge that view. Instead, researchers suggest that mid-ocean ridges and continental rifts have played a much more significant role in driving Earth’s carbon cycles throughout geological time.
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December 4, 2025, 01:17 PM - 5 min read
For 250 million years, coral reefs have played a pivotal role in regulating Earth’s climate by influencing ocean alkalinity and carbon absorption.
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