The moon is quietly absorbing tiny fragments of Earth’s atmosphere — and has been doing so for billions of years, a new study reveals. This surprising case of cosmic cannibalism is thanks to supercharged solar winds and, more importantly, our own planet’s magnetic field. The findings upend a 20-year-old theory about how certain charged particles, … Read more
The catastrophic collision that forged the moon, and marked one of the most consequential events in Earth’s early history, may have been triggered not by a distant interloper, but by a sibling world that grew up right next door, according to a new study. About 4.5 billion years ago, a Mars-size world slammed into the … Read more
Imagine driving down a highway in the summer. The windows are down, the music is loud, and the wind is whipping through your hair. Now picture your car’s windshield. You might expect to see a handful of splats from unfortunate bugs. But 30 years ago, there would have been significantly more buggy skid marks plastered … Read more
A weak spot in Earth’s magnetic field over the South Atlantic Ocean has ballooned in size since 2014, satellite data reveals. The region, known as the South Atlantic Anomaly, has grown by an area nearly half the size of continental Europe, sprouting a lobe in the direction of Africa where the field is weakening the … Read more
Earth may respond to the huge quantities of carbon dioxide (CO2) that humans are pumping into the atmosphere by “overcorrecting” the imbalance, which could result in the next ice age arriving on time instead of being delayed by tens of thousands of years, as had previously been predicted. This is due to a newfound “thermostat” … Read more
New research suggests that the explosive death throes of massive stars, known as supernovas, may have had dramatic effects on our planet’s climate over its distant history. Investigating historic incidents of these events could help scientists predict similar events in the future and prepare for them. Supernovas occur when stars that are much more massive … Read more
In the last five years, the number of satellites orbiting Earth has more than doubled and will likely double again within a similar timespan, thanks to the efforts of private companies such as SpaceX. But while these spacecraft can provide important benefits, they are also causing multiple issues that are only just being realized by … Read more
Left unchecked, the space around our planet could get so cluttered with debris that we might not be able to use some orbits anymore, according to the latest European Space Agency (ESA) report on the space environment. The report, published April 1, states that although new standards to curb space debris are becoming more widely … Read more
Changes in Earth’s tilt relative to the sun have governed the movements of giant ice sheets over the past 800,000 years, triggering the start and end of eight ice ages, new research suggests. The new study revealed an “amazing correlation” between Earth’s tilt and ice sheet formation, said lead author Stephen Barker. Based on these … Read more
There’s a lot more to Earth than meets the eye. Far from being just a roundish rock barreling through space, our planet is composed of several layers held together by intense forces of gravity. Our planet’s interior is much too deep and hot to explore with probes, so scientists rely on seismic waves to understand … Read more
