Rebuilding the past often takes more than digging through ruins or reading faded scrolls. To truly understand ancient ...

Samples from Nasa's Apollo missions hinted that it existed more than three billion years ago, with strengths rivalling ...

for those more familiar with the unit used to measure Earth’s magnetic pull). Weaker hard ferrite (iron-oxide) permanent magnets typically max out at around 0.35 tesla. The world's strongest ...

[MUSIC] JOAN CARTAN-HANSEN, HOST: Force is a fancy word for a push or a pull. And motion ... Even the earth itself is a big magnet with a magnetic field that protects the planet from solar winds ...

Earth’s magnetic field yanks at this solid ball of ... Over many decades, the push and pull of these forces cause variations in the core’s rotational speed, Vidale said. The sloshing of ...

The liquid flow of the outer core as well as pull from an uneven gravity field ... It is possible that the changes are connected to changes in Earth's magnetic field. "The magnetic field has ...

As Earth rotates and part of its magnetic field remains static (at least ... speed caused by natural phenomena such as the Moon’s pull and changing dynamics inside the planet’s core.

Chinese scientists have found direct evidence that the moon’s magnetic field persisted well ... billion years ago – less than 10 per cent of Earth’s present-day surface field.