Earth
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Earth’s seasons change as we orbit the Sun – but can the climate also be affected by the solar system’s changing position in the Milky Way? A new study suggests an ice age about two million years ago may have been triggered by an interstellar winter.
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If you’re planning to see the aurora soon, keep an eye out for a brand new type of sky glow that’s just been discovered. This short-lived phenomenon only appears after midnight and seems to be the inverse of something just spotted a few years ago.
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A new study of ancient detrital zircons from inland Australia has found the first evidence that the Earth has had fresh water and dry land four billion years ago, much longer than previously thought. In fact, 500 million years further back in time.
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The Earth’s magnetic field is vital for life – without it, the Sun’s radiation would sterilize the planet. But a new study suggests we wouldn’t be here at all if that magnetic field hadn’t almost completely collapsed half a billion years ago.
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In 2029, a large asteroid will whizz past Earth so close it’ll be visible to the naked eye. But could collisions with other asteroids bounce it off-course into us? To find out, astronomers have now crunched the paths of 1.3 million known asteroids.
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The hot interior of planets isn’t somewhere you’d expect to find snow, but “iron snow” could fall on Earth’s core. A new study has modeled the dynamics in the lab and found that iron snow could make magnetic fields switch on and off in some planets.
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We only have to look up at the Moon to see the remains of a cataclysmic collision between two early planets, billions of years ago. Evidence may also be beneath our feet, as scientists suggest the remains of that ancient planet lurk near Earth’s core.
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Google has put AI to work as a weatherman, and shown that in just one minute on a single machine, it can make accurate predictions up to 10 days in advance, a task that normally takes a room full of supercomputers hours to achieve.
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Move over TRAPPIST-1 – there’s an exciting new planetary system in town. Meet Kepler-385, home to seven Super-Earths that were just discovered in existing data.
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The cascading effects of a giant asteroid impact is credited for killing off the dinosaurs. Now scientists have identified a new factor – fine silicate dust that hung in the atmosphere for well over a decade, blocking sunlight and cooling the planet.
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Scientists from Caltech and WHOI have found evidence that Earth’s core is leaking. High levels of a particular isotope of helium were found in lava flows in Canada, which the team proposes originated in the planet’s core.
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About 66 million years ago, the reign of reptiles came to a dramatic end. Scientists have now predicted that mammals will meet their maker in a similar cataclysm in about 250 million years’ time, as the continents collide to form a new supercontinent.
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