An Expert Explains How Solar Storms Can So Easily Destroy Satellites

On Feb. 4, 2022, SpaceX launched 49 satellites as part of Elon Musk‘s Starlink internet project, most of which burned up in the atmosphere days later. The cause of this more than US$50 million failure was a geomagnetic storm caused by the Sun.   Geomagnetic storms occur when space weather hits and interacts with the … Read more

A New Simulation of Mars’s Core Could Explain How It Lost Its Magnetic Field

Mars is a parched planet ruled by global dust storms. It’s also a frigid world, where night-time winter temperatures fall to minus 140 C (minus 220 F) at the poles. But it wasn’t always a dry, barren, freezing, inhospitable wasteland. It used to be a warm, wet, almost inviting place, where liquid water flowed across … Read more

Strong, Sporadic Magnetic Fields Could Explain One of The Moon’s Enduring Mysteries

It’s been half a century since the Apollo missions returned from the Moon, and yet the lunar samples they brought home continue to baffle us. Some of these rocks are more than 3 billion years old and appear to have been formed in the presence of a strong geomagnetic field, like the one on Earth. … Read more

Super-Earths: Long-lasting radiation shields may make for life-friendly worlds

Life on Earth is made possible by our planet’s magnetosphere – an invisible radiation shield that protects the surface – now it turns out that super-Earths could have magnetospheres too Space 13 January 2022 By Alex Wilkins The laser system at the National Ignition Facility in California used to study iron’s properties Damien Jemison The … Read more

Earth’s Tilted Magnetic Field 41,000 Years Ago Pushed The Auroras to Unexpected Places

If you want to be dazzled by a spectacular northern lights display, your best bet is to skywatch near the North Pole. But that wasn’t the case 41,000 years ago, when a disruption of Earth’s magnetic field sent auroras wandering toward the equator.   During this geomagnetic disturbance, known as the Laschamp event or the Laschamp excursion, … Read more